The Kremlin may have lost another Su-35 aircraft on Thursday, and the Su-27 derivative may have been the victim of friendly fire according to early reports. Video of a Russian fighter aircraft engulfed in flames as it fell back to the earth quickly circulated on social media.
The highly-touted Russian Sukhoi Su-75 "Checkmate" could still be years from making its first flight, but it seems that Moscow continues to seek foreign buyers for its bargain basement "fifth-generation" fighter.
The Sukhoi Su-35 (NATO reporting name "Flanker-E") has been touted as one of the most advanced 4++ generation aircraft systems, combining many fifth-generation elements.
Reports from Russian state media have suggested that Sukhoi was working on three variants of the Su-75: a single-seater, a two-seater, and an unmanned version.