Russia has concentrated at least 15 Su-57 fighter jets at the Dzyomgi air base, in the Khabarovsk region in the country’s Far East, about 280 kilometers from the border with China.

Key Points and Summary - Russia’s Su-57 “Felon” brings fifth-gen stealth, supercruise, and thrust-vectoring to the fight, giving it clear advantages in signature and close-in agility over the U.S.