Images shared by ImageSat International (ISI) are showing that Russia is swapping out the engines of its Su-24 fleet in Syria. This could mean that the Russian air campaign is intensive enough to wear out the engines.
Photo: ImageSat International
The Jan.28 photos taken by Israeli Eros observation satellite also showed the positions of S-400 and Pantsir-S2 air defense systems at Khmeimim in Latakia.