I have a huge problem with movies that are sanitized to try to make sure that international markets are going to accept the movie. It's the same crap they did with The Sum of All Fears (I think that was the one - all those Tom Clancy movies blend into one other than Red October and Patriot Games). The premise of the book, Muslim extremists getting hold of a nuclear weapon, was not PC enough for them so instead it was Nazis (because of course Nazis want to blow up the US).

They should have just said "screw it" and had it be China. The idea that the DPRK could even get troops to US shores is completely laughable.