I'm not an American, although I live here, I am in no way in favour of this scenario. But it seems too realistic to me.
There's a Star Trek fan-theory that something like this is how you get the "Terran Empire" in the mirror universe. It would in fact make sense since in the eyes of the US this would be the second time that allowing other nations to reach certain levels of parity with the US has caused a major world war and the idea of "never again" would be pretty powerful.
Randy