The US telling N. Korea that it CAN'T have nuclear weapons is like a little kid saying, "NOOOOO!!! You can't have any because I already have it! No pretty shiny badabooms for you!!"
I understand that we're worried that they'll attack us and all, but... hell. If we leave them alone the dictator will have his nuclear high and we won't have to worry about it.
It's that man thing, you know? Like how men compare their dick size.