Well, if you're going to play the military card, OK, all bets are off!
But you're right, instead of seeing their positions go up in smoke with everyone else they'd have to act, umm, decisively to consolidate their position.
They ain't in entirely good straits over there themselves and having a billion peasants go apenuts could make them even more decisive.
It would take a big splat to get to that kind of thinking though...