I see what you're saying, Andy, and it is sure a valid opinion. Lord knows I don't have access to the kind of intelligence one would need to fully assess the situation. And air superiority would be no question.
Still, though, it's on their turf. They have the largest artillery force in the world. They could level most of Seoul in a few barrages with conventional weapons. I read some assessment by somebody credible once (FAS, RAND?) about how catastrophic the first few hours of a war with them would be. Sure, we'd win. And sure, our radar could pinpoint their artillery and knock it out before long. The problem is the huge amount of damage they could do before we could stop them. And rest assured, with Kim Jung Il at the helm, they would surely target populated areas.
As for deployment of the Bomb, they don't really have to put it on a rocket. If we're invading their country, all they have to do is leave it one in our path along the invasion corridor at the DMZ. Detonate it as we approach. And my statement of 10-kiloton came from a Russian report. The Russians said that their equipment thought it was in the 5-15 kiloton range. I split the difference.
Either way, I don't think war is a good option right now. I think we messed up (and by "we", I mean the last few administrations, the UN, Congress, you name it), but it's too late. We should have bombed the crap out of the reactors while they were still making the enriched uranium or plutonium. The fact is, now they have a nuclear deterrent and they are crazy enough to use it. Kim would never give up rule of his country without hitting that big red button.
Munk is right. Now Japan will build the bomb, South Korea will strengthen its defenses, we will commit more resources there (even though it will hurt considering how thin we're already stretched), China will condemn the action and urge restraint, the UN will be largely inept, but maybe pass some sanctions, and the whole thing will probably just settle back into a nice state of more heavily-armed saber-rattling, brinkmanship, and standoff. I sure hope this doesn't come to war, and I really don't think it will unless they start it.
That's my .02.
Chris