I'll see it one of these days, maybe in the theater, maybe not.
The only way I could see North Korea invading the US is if (and that's a big if):
A) It's many years from now.
B) They have built their military up using this:
http://www.raremetalblog.com/2012/08...rump-card.html
"South Korea estimates the total value of the North’s mineral deposits at more than $6 trillion."
This hit the news circut a few days ago, some are calling it a "game changer." Right now both the South Koreans and the Chinese are fighting to take advantage of the situation. Either way you look at it though, NK wins big. They don't have to sell weapons anymore, they can make tons of money legally.