I'm of a similar attitude. Would have been nice if we'd gone in there instead of Iraq (though "going in" is obviously fraught with difficulties no matter where we'd "go in"). They're much scarier than any other regime on the planet right now, and I don't have any real idea what to do about that.
That said, I think that any real attack from NK--against China or Japan or SK, or anybody really--would be met with an international hammer-stroke the likes of which no nation has ever seen. North Korea has been enough of an antagonist, and isolationist enough, it HAS no real allies. Even Russia is keeping a polite distance. They seem friendly with Nicaragua, which could pose energy and economic troubles, but hardly poses much military resistance.
I think if we decided to, we could make NK a 51st state. We'd just have to know that we're signing onto that. Not nation-building. Conquering.
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