I doubt that NK will start a war. If they wanted to, they wouldn't have revoked the cease fire contract, but attacked right away. Their current "policy" is a bit predictable, it's an idle threat. My impression is that they are China's evil ventriloquist's doll. China certainly doesn't want them to have nukes, however.
BTW, I started playing Medieval Total War 2. I started out with the Holy Roman Empire, of course. I already eliminated Mailand (Milano, not sure what the English name is), but the Hungarians just sacked Vienna. There was no chance to win and I even lost an extraordinarily good character, but I made it a bloody victory for them and I'm already gathering an strong army to conquer it back while kicking Denmark's butts in parallel. I'm the Pope's favourite because I finished his crusade, although I'm rather quick at using up his gratitude. Things are looking rather good.
what in tarnation is this capitalizing crap, crud now i cant capitalize the rest of this post to stay in character
any action by the us right now would be ill advised imho, it seems to me that north korea and china are on the outs, so we wouldn't want to do anything that might push them back together, let their falling out continue without disturbance, if that doesn't happen then obama can wag his finger at them or whatever the hell you think he should do since you avoided the question