The US, which has troops stationed on the DMZ and in major population areas will be affected. If met by a nuclear assualt on the south and corresponding US casualties and massive alled casualties, inc civilians, the US policy would be to respond in kind, via tac nukes on massed NK troops and C&C structures within NK. If we dont, we would be disgraced as a country.

The only out to that I see would be if China launched massive strikes into NK, eliminating the threat.

I hope Obama has his war face ready if it comes to this: much more is at stake than the peninsula of Korea. The whole balance of world power will change if we flinch....