Well now we are mad.
The US warns North Korea not to launch a rocket over Japan. And we warn them not to do any more nuclear tests.
Okay, well, this time, SecDef Gates says that if North Korea lets any nuclear technology out of the country, the US will hold North Korea fully accountable.
Translation: and if you do it again, we will totally hold you to blame.
The Czars advice: do not bother with this oy-itll-be-on-your-head finger wagging. They know full well you wont do anything. Not a thing. North Korea has not suddenly and inexplicably gotten crazier. No: pragmatically, they have watched the POTUS bow to Saudi royalty, join a book club with Hugo Chavez, offer to reason with an Iranian scumbag who openly wants to kill every Jew and Westerner with nuclear weapons, let Chinese fishermen overwhelm a Navy ship, and apologize to any remaining Nazis if they felt we were a little too rough on them way back when.
Bullies know a pushover when they see one. You have made them stronger.
Suggestion: next time North Korea blatantly flips the bird to the United States, threaten to call the cops on em.