Sukhoi Su-57 export version. Ruslan Pukhov, director of the Centre for Analysis of Strategies and Technologies, has projected that Vietnam will be the second export customer for the fighter. In 2012, Russian Defence Minister Anatoly Serdyukov said that Russia and India would jointly build the export version of the T-50 starting in 2020. Mikhail Pogosyan, the head of United Aircraft Corporation, said in 2013 that the Russian PAK FA and the Sukhoi/HAL FGFA will use "identical onboard systems and avionics". In 2013, Russia offered Brazil participation and joint production in a next-generation fighter based on the T-50. In May, 2018, Turkish media
Sukhoi Su-15 the Su-15 was abruptly retired from the new Russian Air Force in 1993 to comply with the Treaty on Conventional Armed Forces in Europe. Most were hastily scrapped in favour of more advanced interceptors, including the Su-27 and MiG-31, but some are in reserve storage for emergency use. In Ukraine, the last Su-15s (at Kramatorsk and Belbek) were withdrawn from use in 1996. Some Western reports indicate that the Su-15TM was also designated Su-21 and the Su-15UM Su-21U. These reports are apparently incorrect. Designation Su-21 was reserved for Su-17M4 but never used. Sukhoi Su-15 The Sukhoi Su-15 (NATO reporting name: