The SU57 is Russia's fifth generation aircraft. NATO called it the Felon. Discussion about Russian Aircraft invokes contrary comments both positive and negative. This aicraft is entirely Russian made as is with all Russian fighter jets. So sanctions have no effect. I do think that many either underestimate or overestimate the capabilities of Russian fighter jets.
Credits
https://www.youtube.com/watch?v=I7PSnVogWVo&t=95s
Su-57 Crazy flying demonstration at ZhuHai Airshow 2024
@luhengfoto
United Aircraft Corporation
UAC/OAK @UACRussia