I think it'd be wise to restrain our nukes, just so we can limit the radioactive fallout over Japan - still a reliable ally. I think if it comes down to that, 4 or 5 thermonuclear devices (versus NKs puny atomic bombs) should do the trick nicely enough.... ;)
I was thinking along the lines of those new smaller tactical ones with the low fallout and bunker busting capabilities. I can not for the life of me remember what they are called but they are less than 1mt each and are considered "cleaner" (More environmentally friendly? LOL) nukes.
Folks, we're not discussing some tiny incursion,we are discussing the possibility of NK using nuclear weapons to destroy possibly South Korea, or Japan, or some city in the western US.
What do you think the economic and human ramifications would be if such an event happended? The Dow? Cut it by at least 75%. The world insurance industry? Goodbye. The deaths of possibly 500,000 people? This is not stuff where arm chair quarterbacks sit on their ass and flippantly say "nuke them."
NK is an important lesson for the US that we should attack Iraq so nuclear blackmail cannot happen in the future. But, we need to calmly fix this problem before Kim and his loony friends make war. Remember, if a nuclear war happens, Kim and henchmen will be dead. They may be the lucky ones.