I lived in South Korea and from what I picked up North Korea is like a spoiled child. They really pose no threat, and truthfully their government is near collapse. If they attack any nation whatsoever the whole world is pose to strike on them. They have no strength, no resources to attack the US or any nation of that matter. China has stopped backing North Korea, so there isn't much defense for that. All in all North Korea is nothing compared to isis, Russia, or whatever terroristic country, it is a child.