Equipping the Su-57 with hypersonic missiles would be a significant upgrade for the aircraft. However, multiple questions remain, including how many hypersonic missiles the Su-57 could carry.

The latest is the Su-75 Checkmate - a design whose future is uncertain – and the other is the Su-57 Felon, an older aircraft already in service, designed as competition for the F-35 and F-22.

Once hailed as Russia’s answer to the F-22, the Su-57 has struggled to live up to its promise. Riddled with production delays ...

Designated by NATO as the “Felon,” Russia’s fifth-generation Su-57 represents the nation’s first stealth aircraft.