This is effectively a defection, which in game theory may make sense but we're talking about a lot of lives and the established world order here. You mess with that at your peril, the idea that you can just pretend we're playing a game of Risk here is idiotic. But once you get past a certain point momentum takes over. We may already be there, maybe not quite, but this is about as dangerous as it has been in a very long time.
I agree, but due to the revealed preference of the current rhetoric and how this becomes a defacto method of departure, rather than the choice to depart itself.