I'm thinking it might be Super Street Fighter 2 Turbo ( screenshot ) or one of the SF2 variants.
Edit: could be Street Fighter EX 1.
Edit 2: K, so the PSP port of Street Fighter Alpha 3 Max has some tiny text in the background of the intro to the arcade campaign saying he's from the U.S.S.R. But stages like Big Factory got the hammer and sickle removed in releases like Ultra Street Fighter II: The Final Challengers (2017). This is actually more complicated than I thought it would be.
At least stages like Big Factory had the hammer and sickle removed and I don't think any of them refer to the U.S.S.R. much after. I don't really play new SFs though so I don't know exactly when that change occurred.
Removing politics from video games means removing all symbols except the US flag. :amerikkka: oops no not that one how do I delete that