Russian Air Force Su-30SM covered airstrikes in eastern Aleppo.
Su-30SM fighters were reportedly delivered to the al-Assad International Airport in Latakia, Syria in September 2015.
The Su-30SM – specialised version of the thrust-vectoring Su-30MKI and MKM variants for the Russian military, produced by the Irkut Corporation. Russia’s Defence Ministry was impressed with the MKI’s performance envelope and ordered 30 Su-30SMs, a localised version of Su-30MKI, for the Russian Air Force. The Su-30SM is considered as 4+ gen jet fighter. The new version has been upgraded based on Russian military requirements for radar, radio communications systems, friend-or-foe identification system, ejection seats, weapons, and other aircraft systems.
— Green lemon (@green_lemonnn) 2 октября 2015