By making Seoul disappear?
An invasion of North Korea would probably end in a victory within a week. And then all you would have to do is bury a few hundred thousand South Koreans and then figure out how to integrate 25 million people who have essentially lived in a cave into the modern world.
I wonder if they speak Mandarin? Their military officers are probably not sleeping, eh Mattis?
As for 25 million...people who hate us. Deprogramming takes how long? I know they periodically let their southern relatives in but don’t know if they still do that.
China likes things the way they are. They won’t lift a finger. If we take out just the fat boy, problem solved. Now, how to go in and get just fat boy?