It's weird, because in normal situations the Russians would just PNG them and send them back home, the US would issue a mild apology and lose face for at most 5 minutes on the world stage, and everyone would move on. Or they'd sit in prison for a few months until a spy exchange is done.
Hell, there was that SAD contractor who shot 2 Pakistanis, apparently in cold blood, and he got off basically scott free.
Actually, what was stopping the US from basically going "fuck it" and revealing that the PM of the Russian Federation almost got killed in a coup attempt, after they received their two agents back? That way Bobbi and Hunter are framed as heroes, even if their covert work days are over, and Russia suffers a loss in credibility.