Syrian Chase

From the perspective of the Kremlin, Syria has been a great success. Following the surprisingly successful organisation of a transatlantic response to the Russian invasions of Crimea and the Donbas, the Russian intervention in Syria not only managed to prop up the Assad regime and reverse the course of the civil war, it also made sure that the Russian Navy would get a naval base in the Mediterranean. And most importantly: it forced the West to again talk directly with the Kremlin.

This was not only a case of Russia playing a rather mediocre hand very well, but also of several events outside of Putin’s control lining up favourably. These include both Iran and Hezbollah intervening, as well as the Turkish turn-around following the failed coup of 2016. The introduction of Russian long-range air-defence system, including the S-400, into Syria caused further alarm amongst western observers, with some going as far as stating that no assets in theatre beyond the F-22 Raptor “has any ability to operate and survive” inside the 400 km range of the system’s 40N6 missile.

Red: Iskander-M ballistic missile range (700 km). Blue: S-400 with 40N6 SAM-range (400 km). Source: Wikimedia Commons/VictorAnyakin

I have earlier on the blog cautioned against drawing rings on maps and stating that they are any kind of steel domes inside which anything and everything will be shot down, and this is very much the case for the SAM’s at Khmeimim Air Base as well. The latest strikes on targets in western Syria, including those well-within 100 km of Khmeimim AB, showed that coalition aircraft can strike presumably protected targets without issue. And not only that, if one looks closely at the map, the 400 km range extends well beyond Cyprus. The very same Cyprus which was the base of the RAF aircraft participating in the strikes. In other words, British aircraft took off and landed inside the stated range of the system, and all cruise missiles, both ship- and air-launched, penetrated the bubble without seemingly any of them having been intercepted.

The short answer is that Russia, according to Washington, didn’t try. There is said to have be no indication that the S-400 was fired against anything, and most likely this was a political decision. However, it does tell you something.

If Russia had the magical steel dome that some lay out A2/AD to be, why didn’t they at least swat down some of the cruise missiles, even if they decided to leave the aircrafts themselves (or rather, their pilots) alone? At the crucial moment, Russia decided not to try to protect the assets of their ally. Whatever the reason, the result is a razed block in the Syrian capital.

However, while there without doubt are intelligence services around the world plotting the decision as yet another data point, the immediate outcome isn’t necessarily too dramatic. As TD noted, the West will continue to act like Russia didn’t blink, and Russia will continue to claim that they control the skies over (western) Syria.

The problem is that while Russia might be the great power on location in Syria, the other actors, including Assad, Iran, and Hezbollah, all have their own agendas as well. More importantly, it is highly doubtful that any of them would hesitate to jump the Russian ship if they saw more benefits to be gained elsewhere.

Enter Israel, which is likely the western state that has been cooperating most effortlessly with Russia. In part this stems from a pragmatism that is a strong part of Israeli foreign policy, but it should also be noted that current defence minister Lieberman (and a sizeable Israeli minority) is in fact born in the Soviet Union. By most accounts the Israeli-Russian deconfliction agreement is working nicely, with Russia more or less accepting Israeli strikes on targets in Syria.

Israel has on the whole tried to stay out of the Syrian conflict, in no small part likely based on the experiences from the Lebanese civil war. However, a red line has always been drawn at the “transfer of advanced weaponry” from Syria to Hezbollah in Lebanon. What exactly constitutes “advanced weapons” is left open, but it is usually taken to include long-range rockets and ballistic missiles, surface-to-air missiles, and anti-ship missiles. The Israeli answer to transfers has been air strikes, often carried out with stand-off weaponry from Lebanese or Israeli airspace.

As the war has been dragging on, the Israeli involvement has deepened at the same time as the Iranian impact on the ground has increased. While Assad constitutes a know quantity, Israel has been extremely wary of the long-term impact of allowing Iran a foothold in the region. And while brig. gen. (res.) Shafir of the Israeli Air Force a decade ago confidently could say that Iran is isolated in the Muslim world, recent developments have opened up avenues of approach for Teheran on a broader scale than has been seen before. The recent downing of an Iranian drone that entered Israeli airspace and the following air raids (including the first downing of an Israeli fast jet in a very long time) has increased the temperature further.

A very worrying detail was the fact that Israeli media claims that the aftermath of the raid left Israeli prime minister Netanyahu with the impression that Russia has no real ability to contain Iran in Syria. The problem here then is that the logical conclusion is that Israel will have to deal with the Iranian presence in Syria alone, and while I doubt that anyone inside the IDF is dusting off the plans for a drive to Damascus just yet, a more comprehensive air campaign aimed at severely crippling the Iranian forces in Syria might be in the cards.

S-300PMU-2 TEL. Source: Vitaly Kuzmin

While this kind of Israeli-Iranian showdown is bad enough in and by itself, the big kicker is how that would reflect upon Russia. Having two gangs fight it out on what should ostensibly be your backyard does not leave the onlookers with the feeling that you are in control, no matter how often you say so. In addition, if Russia goes through with the idea to supply the S-300PMU-2 to Assad, this opens up further risks of losing face. While the S-300 is one notch below the S-400, the system is vastly superior to anything currently in operation by the Syrians themselves. As such, it would likely be a prime target in any Israeli air campaign, and echoing the aerial battles of 1982, it would likely be destroyed sooner rather than later.

This all would leave Russia in a bad light, and erase much of the gains in prestige and diplomacy that the Syrian intervention has so far given Russia (in certain places, one should add, as others are less impressed by people regularly bombing hospitals and supporting dictators who use chemical weapons). While attempts at predicting Putin’s next moves are notoriously hard, it is safe to say that he has not shown an inclination to count his losses and leave the table. Instead, when the rest of the players believe him to have overplayed his hand, what usually happens seems to be that Putin will press on regardless. And there’s no telling whether his next move would come in Syria, or somewhere else.


Syrian Strikes

“They had three buildings there [Barzah scientific research center] and a parking deck,” McKenzie said.
“Now they don’t.” via USNI.

Davo9GdXcAI0LBF.jpg large
French frigate firing off one of the three MdCN cruise missiles that were part of the strike. Source: Marine Nationale

As information about yesterday’s strikes against targets in Syria has been slowly to trickling out throughout the weekend, it is by now possible to piece together a picture of the raid. Perhaps the single most informative piece was the press briefing held by Pentagon.

In short, the following units were involved:

Armée de l’Air

Two-seater Rafale B launching with twin SCALP EG cruise missiles under the wings. Source: French MoD

5x Dassault Rafale, launching 9 SCALP EG cruise missiles

4x Mirage 2000-5, escort

E-3FR AWACS and KC-135R/C-135F aerial refuelling aircraft

All aircraft operated out of bases in France

Royal Air Force

Screenshot 2018-04-14 at 23.59.32
Tornado GR.4 sporting two Storm Shadow cruise missiles under the fuselage. Source: British MoD / © Crown copyright 2013 (unmodified news item)

4x Tornado GR.4, launching 8 Storm Shadow cruise missiles

?x Typhoon FGR.4, escort

Operating out of RAF Akrotiri on Cyprus


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B-1B preparing to launch for the raid from Al Udeid Air Base, Qatar. Source: US AFCENT

2x B-1B, launching 19 AGM-158A JASSM cruise missiles

?x F-16, escort

?x F-15, escort

?x F-22 Raptors, escort

Numerous supporting assets, including RQ-4B Global Hawk UAV’s for intelligence gathering, E-3 AWACS, KC-135 and KC-10 aerial refuelling aircraft, and likely a single E-11B relay aircraft

Bombers operating out of Al Udeid AB in Qatar, fighters from both Al Udeid and European bases

Edit: updated information corrected the JASSM version from -ER to the baseline version which is also in Finnish use, and included the presence of F-22’s as escort.


VMAQ-2 Transits Souda Bay
No image of the EA-6B from VMAQ-2 which was part of the raid has been released as far as I know. Here is a similar aircraft from the same squadron during a stopover in Crete, Greece, back in 2007. Source: U.S. Navy photo by Mr. Paul Farley via Wikimedia Commons

1x EA-6B Prowler, ECM escort

Operated out of Ahmad al-Jaber Air Base, Kuwait

Marine National

FREMM-class frigate Aquitaine (D650), likely the vessel that fired the MdCN missiles. Source: Marine National

1x FREMM-class frigate, launching 3 MdCN

Operating in the Mediterranean

US Navy

Screenshot 2018-04-15 at 08.55.51
Ticonderoga-class cruiser USS Monterey (CG-61) launching TLAM missiles from the Red Sea. Source: US Navy via USNI

1x Ticonderoga-class cruiser

1x Arleigh Burke-class destroyer

Operating in the Red Sea, launching a total of 37 TLAM cruise missiles

USS Higgins (DDG 76) which launched the strikes from the Persian Gulf. Source: US Navy/Photographer’s Mate 2nd Class Frederick McCahan

1x Arleigh Burke-class destroyer, launching 23 TLAM cruise missiles

Operating in the Persian Gulf

USS California at sea during sea trials.
Virgina-class SSN underway. Source: Chris Oxley/U.S. Navy via Wikimedia Commons

1x Virgina-class attack submarine, launching 6 TLAM cruise missiles

Operating in the Mediterranean

Alert readers will note that the total amount given is 105 cruise missiles (36 air-launched, 63 ship-launched, and 6 sub-launched), coming in two above the 103 given by Russian sources. The missiles hit the following targets:

Barzah/Barzeh Scientific Research Center

Situated in the western parts of Damascus, the center was hit by 57 TLAM and 19 JASSM missiles.

Sputnik published a video reportedly shot at the scene, which seems to match the location below. It also matches the description given by the Pentagon, in that three large buildings have been completely destroyed.

Interestingly, the dual weapons used says something about the nature of the target. While the TLAM has a rather standard 1,000 lb (454 kg) class blast/fragmentation warhead (i.e. it explodes and creates shrapnel), the JASSM sports what Lockheed Martin calls a “2,000-pound [908 kg] class weapon with a dual-mode penetrator and blast fragmentation warhead” (i.e. it is made to penetrate hardened structures such as bunker before then exploding and creating shrapnel). Another thing to note is that the number 57 does not correspond to any possible combination of the salvos from individual ships, meaning that at least one vessel targeted two different sites.

Him Shinsar chemical weapons storage facility

BDA pictures of the Him Shinshar. Source: Pentagon

The bunkers and facilities used for storing chemical weapons were hit by 22 weapons, these being 9 TLAM, 8 Storm Shadow, 2 SCALP EG, and 3 MdCN. This clearly shows the different nature of the target compared to the research center, as the number of missiles is much smaller, but also the fact that 13 out of 20 missiles were bunker-busting Storm Shadow/SCALP EG/MdCN (which are simply different local designations for the same missile, with MdCN being the ship-launched version). The Pentagon briefing described the target as ‘destroyed’, and while it is harder to verify when it comes to underground installations, significant damage is visible in the satellite imagery posted since.

Him Shinshar command facility

The final target was a command facility associated with the Him Shinshar site. This was hit by the last 7 SCALP EG. Pentagon described the facility as having taken ‘damage’, as opposed to the two others which were rated as ‘destroyed’. It is unclear if this is a failure, or simply representative of the different nature of the target. Command facilities might be able to continue to function to some extent even if key buildings are wiped out, which is not the case with a storage facility in which the storage buildings are hit.

In any case, satellite imagery shows what looks like two larger and one smaller hardened building having been targeted and destroyed.


Despite wild claims of the majority of the missiles having been intercepted and the rest having missed, it is clear that the raid was an unequivocal success on the tactical level. The targeted sites have all suffered heavy damage. If the description of the nature of the targets is correct, it is highly possible that the use of sarin has been made harder by the strikes. Obviously, this does not stop the regime from using a whole number of other ghastly weapons and tactics, including barrel bombs, starvation through sieges, and quite possibly industry grade chlorine (which has been featured in numerous attacks in Syria).

Notable is also the fact that several of the weapons and systems used were making their combat debuts. These include the JASSM and MdCN, as well as the Virgina-class SSN. From a Finnish viewpoint, the combat launch of JASSM (albeit not in the exact version used by the Finnish Air Force) was certainly of interest. However, it should be noted that ‘damaging’ a single command facility virtually undefended by air defences required 7 missiles of the same class as the JASSM, something which puts the Finnish acquisition of (a maximum) of 70 JASSM into perspective.

When it comes to the defences, it is clear that the talk of the S-400 deployment in Syria creating an impenetrable A2/AD-bubble stopping western strikes was not correct. While many of the earlier Israeli strikes had taken place in areas which present difficulties for the S-400 (and supporting shorter-ranged systems) to see and intercept the targets, the strike waves approaching over the eastern Mediterranean would be more or less the perfect scenario for long-ranged SAM-systems, and is very similar to the setup of systems operating from Kaliningrad which often are described as being able to deny NATO access to the Baltic Sea. While it likely was political will that stopped the Russian air defence systems from being activated, the Syrians did their best, with around 40 missiles having been reported by Pentagon as fired. While it is not impossible that some of the cruise missiles were intercepted, it is clear from the pictures linked above that even this barrage of air defence missiles was unable to serious lessen the damage suffered by the Syrians. A significant issue was likely that all missiles struck their targets within an extremely short time span, leaving the individual air defence batteries saturated.

F-16 down in Israel

News broke this morning that during the night an Israeli two-seat F-16 had come down in Israel (pictures). This chain of events started with an UAV entering Israeli airspace, which was then intercepted and shot down by an Israeli AH-64 Apache (‘Peten’/‘Saraph’ being the local designations for the AH-64A and D respectively). Four Israeli two-seat F-16’s then launched a retaliatory strike against targets in Syria, said to be the “Iranian control system” responsible for launching the UAV. Most reports seem to agree that this was located at the Syrian T4 airbase, which has played a prominent role in the Syrian war.

So far the official Israeli reports seems to avoid the use of the phrase “shot down”, instead opting for a more general “crashed”. However, while not impossible, it does seem unlikely that the F-16 would have crashed due to other reasons.

The official Israeli statements also include references to Iran being responsible. 20 minutes after the tweet above, IDF spokesperson Lt.Col. Conricus stated that “accurate hits of Iranian UAV control facility confirmed.”

The site of the Israeli crash site is located in the northwestern parts of the country (not close to Golan as some early reports indicated), at the eastern entrance to Kibbutz Harduf. The kibbutz is approximately midway between Haifa and Nazareth, and just 10 kilometers north of the major Israeli air base of Ramat David. One of the squadrons at the base is the 109th “The Valley Squadron”, which flies two-seat F-16D ‘Barak‘. While the crashed aircraft certainly could be from the squadron, it should be remembered that Israel is tiny, and the plane could easily be from another base as well.

Update 11:00 GMT +2: The aircraft is in fact a F-16I ‘Sufa‘, the highly modified Israeli version of the F-16D Block 50/52. This is clear following the publication of AFP pictures by  The F-16I is the IDF/AF’s aircraft of choice for long-distance strikes against ground targets, and the air force operates around 100 fighters of the version (out of an original order for 102). For the past ten years it has been a mainstay of Israeli strikes in Gaza and abroad, and is likely to be the most advanced version of the F-16 in operation anywhere when it comes to the air-to-ground role. That it was chosen for the raid against T4 does not come as a surprise.

F-16I 1
An F-16I ‘Sufa’ in the colours of the 107th “Knights of the Orange Tail” squadron at the Israeli Air Force Museum. Source: Own picture

Syria has earlier been happy to throw up anything they got against Israeli strikes over their territory (including the obsolete S-200), but so far the only tangible results have been the downing of some guided munitions/missiles. Crucially, it seems that the Russian air defence systems have not taken part in the defence of Syrian territory, and that Israel and Russia in fact have a rather working de-escalatory system in place. While intervention by Russian systems can’t be ruled out, a more likely explanation is that throwing up “massive amounts” of anti-aircraft fire and possibly some older SAM’s eventually got lucky.

Edit 12:06 GMT+2: Haaretz journalist quoting anonymous Israeli sources stating that it was a Syrian surface-to-air missile that brought down the F-16I.

F-16D ‘Barak’ from The Valley Squadron. Source: Aldo Bidini via Wikimedia Commons

In retaliation to the downing of the Israeli aircraft Israel struck 12 targets inside Syria, describing them as including both Syrian air defence installations and Iranian military targets. The nature of the strikes are not described in detail, and could potentially include both ground-based systems (artillery and surface-to-surface missiles) as well as air strikes. While this certainly could escalate, it is unlikely that Syria and/or Iran are interested in a full-blown war with Israel at the current time, considering that the Syrian Civil War is still going on at a quite intense pace. However, as has been seen before, wars can happen despite no one really being interested in them. On the positive side, the fact that both pilots are safe inside Israel probably triggered a significantly more limited retaliation than what would have been the case if they had come down inside Syria and been captured there.

Edit 21:36 GMT+2: So far a number of pictures claimed to show missile debris have appeared, including the ones above. These show a missile fired by some version of the 2K12 Kub (SA-6), a system which scored major successes in the Yom Kippur War 1973, but which was decisively defeated by the Israelis nine years later in operations over Lebanon 1982.

The pictures above, though said to show a S-200, are most likely from S-125 (SA-3 Goa), an even older system which was introduced in the early 1960’s. If either of these two systems were involved in the downing there was probably a significant amount of luck involved. One possibility is that the Israeli aircraft simply ran out of energy trying to dodge a large number of missiles, some sources have stated that more than 20 missiles were fired against the strike package.

Interestingly enough, Israeli sources stated that the air defence sites targeted were S-200 and Buk-sites, though so far no pictures of Buk-missiles have so far surfaced (at least not to my knowledge).

IDF has released video said to show the downing of the Iranian UAV as well as the destruction of the command vehicle. In addition, pictures of parts of the wreckage have also been released. The wreck matches the UAV shown in the released video, and is serialled either ‘006’ or ‘900’.

While the downing of an Israeli aircraft in itself won’t change the balance of the air war, this was shown clearly by the massive wave of strikes against a variety of target following the downing, it is still a significant propaganda victory for Syria/Iran/Hezbollah. As such, the greatest danger is that it could potentially cause one or several of the actors to try and push their luck further, causing a downward spiral no one really want at the moment.

Guest Post: Accuracy of Freefall Aerial Bombing

Topias Uotila @THUotila is an active reservist and a student of warfare and security politics. Image: Excerpt with freefall aerial bombs. Original.

Accuracy of Freefall Aerial Bombing

It is said that freefall bombing is inaccurate, but that’s a very inaccurate thing to say – all pun intended.


This article estimates with two methods how accurate modern freefall aerial bombing is. The methods don’t meet scientific standards, as the intent is rather to find a good rule of thumb for, for example, defense planning. We come to a conclusion that for bombs dropped from a non-harassed modern bomber at high altitude, for example over 5000 meters, a reasonable rule of thumb for CEP is 50 meters. The article consists of a literature study and an OSINT piece verifying the former.

My interest in the subject started when I gathered a crude dataset of different air launched weapons with, for example, ranges, carrying aircraft, weather requirements and accuracy. Most of the data is listed right on Wikipedia, but the accuracy of modern freefall bombing efforts was very elusive. It was unclear whether this is due to secrecy or the complex dependencies of accuracy to multiple variables.

Media preview
Most of the easy to find material handles the Second World War, but even then, the measures were more about mission success in total rather than accuracy of the bombing run.

Aerial Bombing

If you drop a stone, it will hit the point directly beneath it. But if you drop a shaped bomb from a freely moving airplane in conditions with varying wind and air pressure, calculating the point of impact becomes increasingly hard. If the wind and pressure conditions change during the flight path, calculating the trajectory beforehand becomes downright impossible. In reality there are even more sources for variance. Manually choosing the time of release is error prone, as is flying the aircraft at a constant level path and even the bombs may not be uniform or released at exactly the same moment. Sometimes dispersion is also sought after. It’s better to have eight bombs hit different parts of an area target than a single point.

To give an understanding of how much these variables affect the accuracy, let’s stop for two data points. During World War Two it was estimated that a three-degree change in heading at release lead to a 200-meter deviation at impact and a flight speed deviation from calculated of just a couple of kilometers per hour led the bombs astray for tens of meters.

Despite the complexities, I believed it has to be possible to have at least a statistical estimate of bombing accuracy or alternatively an accuracy function with a couple of the most important explaining variables, for example, drop altitude. These didn’t seem too secret, so I suspected that by asking on Twitter I would get at least mediocre sources. Naturally, I got more than I bargained for. To verify these further, I suspected I’d need to do some calculations of my own. Enter video footage from Syria, where Russia has used massive amounts of freefall bombs. I focused on a case study of two popular show reels of UAV recorded videos. The first video has likely one Su-25 run and one Su-24 run and the second video was presumably several Tu-22M3 only missions. The latter video was especially interesting as, since the plane type is a bomber, the strikes are certainly all from a relatively high altitude. My assumption is from 5.000 to 8.000 meters. By happenstance, Tu-22 is also the plane type I was most interested in to begin with.

Literature Study

During the past years USA has replaced almost all free fall bombs with JDAMs. The JDAM is a kit that is installed onto a conventional bomb. It makes the combination many times as expensive, but doesn’t differ in explosive or fragmentation potential. Conventional bombs cost a couple of thousands and a JDAM kit about 26.000 dollars. Thus, the JDAM has to be better in some other way. While there are a few possibilities, it’s relatively safe to assume the JDAM is more precise. With GPS the JDAM achieves a 5-meter CEP and without it a 30-meter. Thus, we get a lower boundary for the CEP of freefall bombing. If freefall bombing would be as accurate as a JDAM, JDAMs wouldn’t be used.

The Russian solution to the same need is the SVP-24, which is not an addition to the bomb, but rather a bombing computer added to the airplane. Thus, bombing with SVP-24 fulfills the definition of freefall bombing. Some Russian sources claim that they can achieve GPS guided JDAM level accuracies e.g. 3 to 7 meters with the SVP-24 in ideal conditions. They further claim, that even in battle conditions the accuracy would be on the level of 20 to 25 meters. While it is unclear if these accuracies mean the CEP, weaker accuracy measures are seldom used. Thus, these are very challenging claims to achieve. Personally, I find them hard to believe, but at least they add to our understanding and confidence of the maximum freefall bombing accuracy estimate.

Interestingly the same source estimates that bombing without such a computer has accuracies between 150 to 400 meters. Here, the high end, for a change, feels intuitively too large, as it corresponds to the maximums estimated in World War Two.

So, let’s look at that more historic data and begin from World War Two. The earliest estimate gives us a figure that only forty percent of the bombs hit a circle with radius of about 450 meters. This was before 1944 when the CEP was even introduced as the standard way of measuring accuracy in the US. When the new measure was introduced, the CEP accuracy had already improved to around 300 meters from the altitude of 5.000 meters using the B-17 and B-24 bombers.

One major invention behind accuracy improvement was likely the Norden bombsight. We can find a lot of data for it starting from testing in the 1930s. From an altitude of 1.200 meters a CEP of 11 meters was achieved in training. From higher up, they managed to achieve a 23-meter CEP. And when the set-up was moved to actual war, Air Corps achieved a 120-meter CEP from the altitude of 4.600 meters. Still zooming out and taking into account the whole attack, the bombs ended up on average 300 to 400 meters from the intended targets varying especially by unit and bombing altitude. Ending up on average 300 meters from the target is the practically the same thing as a 300-meter CEP – perfectly in line with the earlier measure for the B-17 and B-24.

During the war this inaccuracy made dive bombing an interesting choice for all belligerents. The Germans trained their crews for a CEP of 25 meters compared to 50 to 75 meters for level bombing. Both of these measures were expected to at least double in the heat of the battle. American efforts for dive bombing were on a similar level. As these figures for level bombing can roughly be stated as a CEP of 100 to 225 meters, they are a lot better than the ones presented for the Norden bombsight in the previous sources. This is likely due to combat being more challenging than what the bombing schools estimated.

The next data point that we have is a US estimate on the capabilities the Soviets could develop by the mid-60s. It’s a pretty safe assumption these are close to or slightly better compared to their own capabilities during the time of the writing. The best thing about these estimates is that they are presented as a function of bombing altitude making us able to draw that function.

How accurate could the Soviets become by the mid-60s?

To summarize, the visual bombing improves with lower altitude a lot more than radar directed bombing and the best estimated accuracy is about 122 meters from an altitude of 3.000 meters. This gives us a total estimated range for CEP of 120 to 900 meters with CEP more than doubling when the altitude doubles.

Fast forward another decade to Vietnam and the bombs dropped by the F-105s achieved a CEP of 111 meters. This was when the airplanes were not shot at. The CEP increased to 136 meters under anti-aircraft artillery fire. Another report gives the A-1 a 90-meter and the F-4 a 150-meter CEP, when bombing from 600 meters of altitude. The difference is attributed to the faster speed of the F-4. The accuracy reverts back to World War Two levels of 300 meters during the night time or during adverse weather conditions. Yet another source states both this huge variance and my research problem painstakingly clearly by saying that the daily accuracy average ranges from 30 to 300 meters depending on tactics, target and weather. With radar bombing they managed to control some of the variance and get the accuracy to about 150 meters. The surprising thing is that this was considered as good as dive bombing accuracy, although the figures from World War Two for dive bombing already looked better.

Finally, the book “The Precision Revolution” gives a direct estimate of 61 meters for the CEP of US freefall bombing in 1990. Haven’t personally read the book, but Tuomo Rusila pointed this out in the previously mentioned Twitter discussion. It is good to keep in mind how dominant the US was in Iraq. However, it is quite probable, that the technology and techniques did improve dramatically from the Vietnam era. The rate of improvement has probably slowed down since the 90’s. Both due to diminishing marginal returns, but also due to the diminishing importance of freefall bombing.

Summary of the data found in the literature study. There’s a lot of variance.

In conclusion, it’s difficult to believe any modern freefall bombing would achieve a lower than 25-meter CEP and on the other hand it seems quite proven that a 60-meter CEP can be achieved. Everything is naturally highly dependent on the conditions, skill and technology used.


Next, we’ll compare these figures to what Russia has documented for us in Syria.


For the first strike, that I’m presuming to be done by a Su-25, we can identify three points of impact. The distances between the points range from 102 to 257 pixels in my original. At the same time, what I believe is a truck, is about 18 pixels long. If the truck is 8 meters in reality, the distances between the impacts are 45 and 114 meters. Calculating an exact CEP is not very fruitful with only three impact points. This is the only one of the strikes that I have currently geolocated and it’s at 36.407257°, 37.153259°. Looking at the distances Google gives, we get a rough validation for my estimates and subsequently proof that the truck is quite close to 8 meters.

In the second strike we can identify six points of impact. Using the road width as a reference point with presumably approximately 6 meters of width, we get a 68-meter distance between the furthest separated points of impact. However, looking at the location of the buildings, it’s likely that the aim point is close to the center of the frame or to the left from it, so all of the impacts are to the right and up from the aim point. I’m assuming this strike was carried out by a Su-24.

Let’s move on to the next video.

In the third strike, we finally see that in reality the CEP doesn’t describe how several freefall bombs behave, if dropped from the same airplane. Naturally, they do not disperse circularly, but elliptically. Before jumping to conclusions, it’s good to note that the second highest impact point is struck the last and noticeably later than the others. This is also why you can’t yet see an explosion in the still frame. Thus, it isn’t clear that the bombs would disperse a little, but are just spread out due to the movement of the dropping airplane and sequential release from the bombing shaft of the Tu-22.

Unfortunately, this image has no terrain features I could recognize and measure against. But since the explosions looks comparably the same size as in the other strikes and the different freefall bombs used by Russia shouldn’t differ much in that sense, I’m inclined to believe this strike has about the same dispersion as the others.

The next two images are from a large strike against an area target. Since the images are from two different segments of the video, it’s possible they are not even from the same day. At least one can’t see some of the smoke from the first segment in the following one. In addition to these images, there were several other runs on the target. While in the case of an area target, dispersion might be sought after, it’s notable how large the dispersion is. The building marked with the red line in both images is in fact quite huge. This can be seen from the following zoom in.

My estimate is that it should be at least 40 meters in length, which makes the distances between the individual explosions in each of the bombings to be at least 100 meters and up to 300 meters.

Fifth strike is again hard to measure due to lack of measurable features. The lines might be trenches making them about 1 meter wide. Again, the dispersion feels to be on a familiar level. The actual target of the strike might be some pillboxes or sandbag fortifications.

In the final strike we have another area target with low accuracy. Again, this may be intentional. However, the building in the middle looks like some kind of an industrial hall, which should be at least 20 meters in length. In the image it is 55 pixels long. As the maximum distance between two impact points is 629 pixels, these are then approximately 229 meters apart. As we have at least eight impact points, it’s finally somewhat meaningful to also approximate the CEP for this particular strike. We can fit half, i.e. four of the impact points, within about 80 meters of an imaginary aim point somewhere in the average of these impacts.

Conclusion and Discussion on Errors and Further Studies

Looks like in the videos the Russians aren’t quite achieving the 61-meter CEP USA claims to have achieved in 1990. The equipment may be worse, the dispersion may be intentional or USA might have inflated their accuracies. However, it’s clear there’s no magical 3-meter accurate SVP-24 in play. I’m still inclined to believe that the Americans’ achievement could be surpassed now almost 30 years after. Also, as it is better to be safe than sorry in the context of defense planning, I’m advocating a 50-meter CEP as a good rule of thumb for freefall aerial bombings.

Whole different question is then how accurate you need to be? Depends not just on the bomb, but also on the target. If you don’t score a direct hit on a tank, it’s going to be very difficult to harm it. If you get within tens of meters from an unarmored fellow standing upright, he’s pretty much dead. Fragments from a modern bomb can fly for hundreds of meters, but it’s always also random whether you get hit by one. Then again, the attacker might deploy a cluster or an incendiary bomb, making the calculation totally different.

There were several sources of error and inaccuracies in this study that would need to be eliminated for a scientific article. The sources in the literature study may be motivated to lie in either direction, but especially the OSINT-part would benefit from more analysis. First of all, the Russians are certainly selecting only successful mission videos to publish. Second, several of the frames are so tight that far away misses are outside the camera angle. Like mentioned, we’d need to know the aim point to estimate not just the relative dispersion but the actual deviation and CEP from the target. I’m pretty sure, we can’t assume the UAV camera crosshairs are pointed at the target point. These errors mostly make the strikes look more accurate in this study than they are in reality.

Third area of errors is the level of effort I personally put into the analysis. In many of the strikes it looks like there are more impacts close to each other that might be discerned with a frame by frame analysis. Taking these into account would generally improve the CEP. Also, I could’ve used real math in finding out the weighted averages of the impact points instead of just measuring the maximum distances between them. Similarly, real OSINT geolocation could’ve been used in finding out the real dimensions of the distance reference features. These errors could change the end result in either direction. Unfortunately, I could find only one of the strikes from the Bellingcat database of geolocated Russian strikes in Syria. Also I didn’t quickly find anything on Google Maps around Palmyra matching the second video.

In conclusion, I suggest using the mentioned 50-meter CEP in your work as a rule of thumb. It’s a conservative estimate from the defender’s viewpoint. However, if you still need more accuracy in accuracy estimates, please go on with the research and let me know of your results, too!

Review: Russia’s Warplanes (Vol. 1 & 2)

If last month’s review was a unique book covering a rarely seen topic, this month’s double have it tougher when it comes to defending their necessity – do we really need yet another book on the same MiG’s, Sukhoi’s, and Tupolev’s?

Spoiler alert: Yes, we do.

But let’s take it from the beginning. As the subtitle indicate, the topic is the aircrafts and helicopters of today’s modern Russian Armed Forces and export derivatives of these. You will not find the MiG-21 here, but instead what is probably the most up to date go-through of all Su-30 versions found throughout the world. The books are complementary volumes, were Volume 1 deals with tactical combat aircraft (up to Su-24 and -34), transport and attack helicopters, reconnaissance, surveillance, and special missions platforms (including aircrafts, helicopters, and balloons!). Volume 2 takes on strategic bombers, maritime aircraft, transports, tankers, and trainer aircraft. In addition, volume 2 also covers developments regarding the aircraft presented in volume 1 which took place during the year between the two volumes (August 2015 to August 2016). It also feature a chapter on the Russian air war in Syria.

The books are divided into chapters according to the role of the aircrafts, and each aircraft get their own sub-chapter. In cases where significant changes has been made, new generations get their own sub-chapters, such as the MiG-29 being split into the early air superiority line and the multirole MiG-29K/29M/35 line. All data is given in running text, with no data tables or similar. This makes the book highly readable, with clearly structured sub-sections making it possible to easily find any data point you might be looking for. It is certainly possible to read the books cover-to-cover, though I find it more enjoyable to head straight for the aircraft I am currently interested in. The books do provide an excellent one-stop shop for well-researched information on the Russian Air Force of today, making them invaluable when you suddenly feel like checking up the capabilities of that Il-20M spotted at pictures of Hmeymim air base.

Screenshot 2017-10-05 at 21.02.12

While the stars of the book certainly comes as no surprise to anyone, the Su-27/30/33/34/35-family e.g. occupy 30+ pages of the first volume, the books leave ample room for less well-known systems as well. The trainer versions of the Tu-134 get their own sub-chapter, and I didn’t even know about the existence of Russian tethered balloons before I read about them here! In short, if it flies and there is a reasonable connection to the Russian armed forces, it is represented in the books.

As with the book on Russia’s air-launched weapons, it certainly feels well-researched. Without losing the big picture, Piotr Butowski provide valuable insight into details. This is the first time I have encountered the fact that Sukhoi differentiates between the Vietnamese Su-30MK2V and the Venezuelan Su-30MK2V by writing the former with a Cyrillic Ve (Су-30МК2В) while the later is written with a Latin V (Су-30МК2V), just to give a small example on the level of detail.

Screenshot 2017-10-05 at 19.51.08

I actually struggle to find any major faults with the two volumes. Compared to the earlier review, these come in at a solid length of 252 and 251 pages respectively. The soft-cover books hold up well (though my examples did have a corner being slightly damaged in the mail), and I have experienced no issues with the binding despite at times leaving the book opened for some time. I like the fact that the books provide both a suitably deep (obviously a subjective measure) overview of the famous aircraft in use, but perhaps even more I value the fact that I now have a trusted source for easily looking up more obscure systems such as UAV’s and some of the newer sub-variants of older designs. The fact that the books are so new certainly provide added value, as they cover the recent period of modernization of the Russian Air Force.

Highly recommended!

Both books were provided free of charge for review by Harpia Publishing. The contents of this review has not been discussed with or revealed to Harpia before posting.

Under Scottish Skies – Red Flag and the Middle East

The Eurofighter Typhoon is probably the most misunderstood aircraft of the HX program. The public perception of it, especially outside of Finland, is surprisingly negative. Much of this is based on the early teething troubles experienced by the program. “There were absolutely issues to starts with”, group captain Paul Godfrey, OBE, concedes. The former Harrier pilot is the station commander of RAF Lossiemouth, the larger of Britain’s two Typhoon-bases, and one of the original pilots to transition to the multirole fighter when it first entered service with the RAF a decade ago, something he was chosen for partly because he had multirole experience from flying the F-16CJ ‘Wild Weasel’-variant during an exchange tour with the USAF. Of his current mount, he has (almost) nothing but praise. “It’s like an F-16 on steroids”, he compares the two, talking about the similar philosophy of the aircrafts, with both focusing on performance and multirole capability. Fully coming to grip with the multirole tasking has required some new thinking for the RAF, who up until recently operated a large variety of single-role aircraft. This was one of the reasons pilots with exchange experience were common in the first Typhoon units. Today, there’s naturally a considerable number of ex-single role pilots, especially as the Tornado is approaching the end of it’s service life in the RAF.


“When I first flew Typhoon, I knew it was gonna be a game changer.”
Group Captain Paul Godfrey OBE, Station Commander at RAF Lossiremouth

But while the early Typhoons were plagued by a number of different issues and a decided lack of interest on the part of British politicians when it came to funding the necessary development programs needed to unlock the fighters full potential, today it is in many ways a mature system. This was something Godfrey got to experience first hand. Only in the second week of his new job as station commander, he was faced with the order to dispatch six Typhoons from 1(F) Squadron down to RAF Akrotiri in Cyprus, from where they were to conduct strikes over Iraq and Syria. Within twenty-four hours of receiving the mission, the Typhoons touched down at their new operating base, and within a further twenty-four hours the first combat-loaded aircrafts were already flying operational missions over the battlefield. After 1(F) Squadron was ready with their tour, fellow Lossiemouth squadron 6 Squadron took over. In total, Lossiemouth based Typhoons alone have dropped closed to 700 Paveway IV laser/GPS-guided bombs during Operation Shader, as the British anti-ISIL air operation is known.

The missions flown in Syria and Iraq include air interdiction, close air support (CAS), and strike coordination and reconnaissance (SCAR). Cue lasting debate over value of fast jets as opposed to classic single-role aircraft such as the A-10 Warthog or Su-25 flying the CAS mission. For wing Commander Billy Cooper, the squadron commander of 6 Squadron, the answer is clear. The old way of doing CAS was created out of necessity, as the only way of acquiring a target accurately was by looking out of the window, which meant you had to be close to the target and flying slow. With today’s advanced sensors and precision guided munitions, that need is gone, and using faster and more advanced aircraft will provide significant benefits, including e.g. survivability and transit time from loitering area to the battlefield. Originally a Tornado F.3 pilot, Cooper is also a Qualified Weapons Instructor with over 3,000 flying hours on fighters. The RAF QWI course roughly corresponds to the US Navy’s TOPGUN program, but strives to give a broader understanding of the aircraft, it’s weapons and capabilities. Earlier this year, he lead the squadron in exercise Red Flag 17-1 in Nevada, an exercise which created quite some buzz for being the first time the F-35A participated in a Red Flag exercise.

Cooper under plane

“We were working quite closely with the F-35.”
Wing Commander Billy Cooper, Officer Commanding 6 Squadron

While it was heavily reported that the F-35A had achieved a 20:1 kill ratio, the details of the exercise has naturally been kept under wraps. As such, it was very interesting to hear Cooper describe his first-hand experience of operating Typhoons together with the F-35’s. As could be expected, he described the F-35 regularly operating within the engagement zones of the REDFOR air defences. Compared to other non-stealthy fighters, the Typhoon was in turn able to achieve greater stand-off range for its weapons, thanks to its ability to operate higher and faster. This allowed it to lay further back, often remaining outside of the threat range. What all seemed to agree on, was that the the F-35 transmitting sensor data on Link 16 provided a huge boost in situational awareness for the rest of the fleet.

When asked about the RAF acquiring both aircraft, none of the pilots were prepared to pick one over the other. “You need stealth to be able to go forward,” Cooper argued. His personal opinion was that the future lies in the mix of capabilities provided by different platforms, echoing the sentiment expressed by his commander at an earlier briefing. “Both airplanes are fantastic airplanes,” Godfrey had said. “A mix would always be better [than operating only F-35’s or Typhoons].” When pressed further for which one he would choose if he could only get one, Godfrey had smiled and just said “Both”.

While a puzzled group of Finnish media representatives started to wonder if the fighter pilots were arguing for the stealthy F-35 as the right choice for HX, further discussion revealed the complexity of the issue. The big thing in the mind of the pilots was not so much stealth in and by itself, but the superior situational awareness the F-35 got by combining the ability to get in close while carrying a good sensor suite, and which it then shared with the rest of the team. By teaming up with the Typhoons and their heavy load of long-ranged weapons, the F-35 in turn got around it’s main weakness in Red Flag, namely its very limited load of internal weapons. Some participants in the exercise jokingly referred to the stealth fighter as the ‘cheerleader’, always present providing data and cheering the other ones on, but often unable to take the shots themselves having already expended all their missiles.

It also seemed that for an air force used to operating a wide variety of tactical single-role jets the Finnish problem of only being able to afford a single type while not being able to count on the support of allies was hard to relate to. BAE test pilot Paul Smith, a former squadron mate of Cooper, agreed with the operational pilots that he saw a future need for a stealthy platform providing increased situational awareness, but rather than going for a stealth fighter he talked about replicating the successful hunter/killer-teams of Red Flag with an unmanned stealthy wingman getting in close and the Typhoon bringing its firepower to bear from stand-off range (yes, a picture of Taranis had managed to sneak its way into one of the briefings).

But while going into heavily defended airspace with a non-stealthy platform might not be optimal, Red Flag did also see the Typhoon do just that and come out on the other side to live to tell the tale. While the exact details aren’t open information, we were briefed that the fighters took out targets being covered by layered defences of “double and triple digit SAM’s”, indicating systems entering service in the early 80’s and later, likely including at least the S-300. What made this possible was two things. To begin with, the Typhoon’s self-defence DASS suite received nothing but praise. The system not only automatically scans for threats and autonomously uses jamming and countermeasures to defeat them, it also provide visual cues for the pilot on how to best outmanoeuvre any threats encountered. The other factor that increased the survivability of the Typhoon was again its performance. The combination of a manoeuvrable aircraft with an impressive thrust-to-weight ratio gave the pilots the ability to defeat the missiles encountered. It might not be as nice as having stealth, but BAE puts enough trust in the concept to plan for the upcoming P4E enhancement to include a SEAD/DEAD-ability (more on the upgrade path in an upcoming post).

In the end, no-one was willing to tell us which aircraft we were supposed to buy, though for the RAF, the operational concept is clear. Typhoon is set to stay the force’s air superiority platform past 2050, while “F-35 is a Tornado [GR.4] replacement,” as BAE’s John Bromehead explained. None of the pilots seemed interested in trading their Typhoons for F-35’s, but they just might be willing to swap out the Typhoons of the squadron next door.

Typhoon 320

“I’ll never gonna give up speed”
Gp Capt Godfrey

Has the F-35 gone to war?

A surprising Twitter-thread by Le Figaro‘s Georges Malbrunot Tuesday stated that the F-35 made its combat debut already in January, when it would have taken part in an Israeli raid on Damascus.

Unfortunately, I do not read French, but Air Forces Monthly published a nice overview of the info, found here.

The raid has been known from before, and was directed against Mezze Air Base (alternative spellings include ‘Mazzeh’ and ‘Mezzeh’) in the western outskirts of Damascus, around 45 km from the armistice line marking de facto Israeli territory post-1973. The base is clearly visible in Google Maps. Notable observations include:

  • The base seems to house mainly military helicopters, though a few fast jets are visible,
  • A number of hardened-aircraft shelters are found, naturally it is impossible to tell if more aircraft are housed in these,
  • Several of the revetments at the ‘amoeba’-area in the middle of the field seems to have been hit. Several small marks could indicate either cluster munitions, secondary explosions/shrapnel/fires from aircraft standing there being hit, or salvos of (light) mortar fire.

The base has been hit several times by the Israelis, including in December last year. Then the alleged weapon of choice according to Syrian news agency SANA was a surface-to-surface missile system fired from a position close to Mount Avital (or Tal Abu Nada). As a side-note, I find the claimed firing position somewhat dubious. SANA claimed in the January attack as well that the weapon used was a surface-to-surface missile, but fired from close to Lake Tiberias (Sea of Galilee). Another interesting raid allegedly took place in December 2015. Here, a Syrian source claimed that the Israelis fired four Spice-2000 stand-off precision guided munitions from inside Israeli airspace, to take out the convicted Hezbollah-associated terrorist Samir Kuntar in his sixth-floor apartment in Damascus. While it seems certain Kuntar died in an explosion at his apartment, the exact circumstances are unclear to say the least.

What is certain is that in the 1982 Lebanon War, the Israeli Air Force completely dismantled the Syrian ground-based air defence network, and then followed it up by destroying the fighters that the Syrian Arab Air Force scrambled. After this, the Israelis has proved a number of times that they can operate inside Syrian airspace more or less with impunity. The single most famous raid was Operation Orchard, the raid that destroyed a Syrian nuclear site in 2007, and which included both fighter jets and helicopter inserted special forces. This haven’t changed despite the Russians bringing modern surface-to-air missile systems to Syria, though whether this is due to Israel only operating outside their range, the systems not being as capable as they are rumoured to be, or due to behind-the-scenes politics between Russia and Israel over the head of the Syrian government is unclear.

Air Mobility Command enables delivery of Israel’s first F-35s
One of the first two F-35’s being refuelled by a Tennessee Air National Guard KC-135 During their trans-Atlantic flight. Source: U.S. Air Force photo by 1st Lt. Erik D. Anthony via Wikimedia Commons

The first two F-35’s arrived in Israel last December, and they have seen heavy use by the Golden Eagle Squadron based at Nevatim Air Force Base in the Negev desert. Officially the aircraft undertook their first night flight on the evening of 16 January (or 15 January, the wording is somewhat unclear).

The IAF article on the event is interesting in many ways. The squadron commander, Lt. Col. Yotam, has nothing but praise for the aircraft. “We are performing a night flight very quickly in comparison to other aircraft that were integrated in the IAF”, he notes, while at the same time maintaining that they “in every mission, we operate slowly and in a supervised manner, while performing in-depth risk management”.

This event took place a few days after the alleged use of the Adir over Syria.

“The ‘Adir’s ability to fly in threatened areas is allowed not only thanks to the dark”, explained Lt. Col. Yotam. “We plan to fly without constraints of time or space, so it is a scenario we want and need to train for”.

Despite the aircraft officially still being in test and evaluation use in Israeli service, the IAF has built up a reputation as just the kind of force to throw out the rulebook and go with a ‘whatever gets the job done’-philosophy. The ability to penetrate air defence networks to hit high-value targets is certainly there for the F-35, with the F-35A having the ability to do so (against static targets) already with the current state of software and weapons integration.

However, there are numerous things speaking against an early combat debut. The aircrafts would have spent barely a single month in Israel at the time of the raid, which despite the previous testing done in the US and the mission-centric philosophy of the IAF is a very short timespan. They also lack proper integration into the Israeli combat network, as the IAF will fit a number of indigenous systems into the aircraft on top of the aircraft’s own code (the changes are large enough that several sources, including the IAF, refer to the Israeli F-35A as the F-35I). This job has not been done yet, making some question whether the IAF would risk operating the fighters over enemy airspace outside of the Israeli command and control network.

Perhaps the main issue is the fact that Israel demonstrably has no urgent need to push the Adir into harms way. The Air Force, as well as some ground based systems, can reach Mezze even from within Israeli territory, and even if there would be a need to get closer for better precision, this has been shown to be possible with ‘legacy’ fighters such as the F-15I and F-16I as well.

It is of course possible that the Israelis saw the use of the Adir as a means in itself, showing not only Syria but other potential adversaries as well that the Israel’s newest tool is a true weapon system bringing new capabilities to the Air Force and not just an expensive toy (or perhaps to convince doubters high enough in the Israeli command structure/politics that they receive access to info on the raid). It might also have been decided to use the Adir as part of its test program, to measure its current capability.

Still, at the end of the day, there is no denying that the schedule simply seems too tight, and I find the claim that the Adir would have seen combat a month after its in-country arrival too far-fetched.

Another question is whether it would have made a difference if the Adir had taken part in the raid or not? In theory it wouldn’t. The baseline F-35A reached IOC last year with the USAF, and considering its performance both during the evaluations and in post-IOC exercises a mission 50 km into a relatively lightly defended airspace such as this is nothing spectacular. In practice however, the marketing value of the ‘Combat Proven’-stamp shouldn’t be underestimated. After all, it was Israeli combat use fifty years ago that provided some of the groundwork for the huge export success enjoyed by on of the truly classic fighters of the last century.