bdub77: There's a good chance the world would have to come in and do something about it, but who is to say what that would be.

What world is that ? Canada will be lucky if they can hold their own border if the fighting spreads to the northern states. And they WILL militarize the border in a big damn hurry because the US refugees will easily swamp Canada. Europe including what would be left of NATO without the US simply doesn't have the away game capability to cross the Atlantic even into a friendly country like Canada. Russia and China for all their dreams of a Red Dawn can't pull that off either. Even at the height of the Cold War era the Soviets never had the sea or airlift capability to invade the US. Since then their military has only aged like a fine milk.


The world will sit on its hands and say "oh, look at the terrible war and disease and famine happening over there. Someone(else of course) should do something" no differently than they do now or any time in the last 70 years. A good sized US civil war will tank our economy worse than the housing bubble and the rest of the world's economy will tank right along with it.