crimes is itself a violation of the geneva conventions. and china could be held responsible for that. >> this weekend, the deputy chief of the russian security council said that the kremlin could use nuclear weapons if the existence of russia was threatened. what do you make of those comments? >> this is real fear mongering. clearly russia knows that it's on the ropes, that it's losing this war, at least that it is not making the progress it expected to and is hoping to scare everyone to stretching back and allowing it to progress in ukraine. you know, it's possible. i wouldn't rule out the possibility that russia would use some of the smaller tactical nuclear weapons that it has developed. that would be extraordinary. it would be crossing a red line that, you know, has not been crossed since the use of nuclear weapons at the tail end of world war ii. it would change the game and be