N Korea claims they have nukes. It's been pretty widely reported for the last two years that they do, they just don't admit them (like Isreal). So now what? Either the chinese help, or they implode within a decade. Either way, they probably won't use them. It's a stuffed animal mentality. If they do use them, then the 'gravest possible' outcome will result, we'll nuke them back. Their country is small enough to obliterate from the face of the earth without serious global catastrophy. So, I think they may be paranoid, but not stupid.