"Well, the N. Korean army can walk to Seoul.... and the only way to stop them would be with WMD."

Yeah, except for the one million land mines that remain a key reason the US won't join in the anti-land mine treaty. They can be cleared, but not in time to keep all those hungry, slow moving troops from being slaughtered from the air. Then the real party starts -- the North Koreans have to face a modern, well equiped army that doesn't have to worry about having enough fuel, food or ammo. The South Korean, I mean, not the US.

"A nuclear bomb is always offensive- it is only defensive when it remains a deterrent. Once you use it..."

True, but most nations find it difficult to forget that there's exactly one nation that's proven they aren't afraid to use them and who reinterates their intentions to retaliate in kind if they're ever used against us or an ally. Yeah, I know, in the long run it all depends on how crazy (suicidal?) HONG Song-nam really is...