[whdonnelly]

Here's a twist. Following the aforementioned collapse of the North Korean regime, China, Russia, NATO, and Japan all send in ground troops to administer the north, search for WMD, whatever occupation duty is needed. South Korea suddenly feels like they are being treated like a junior partner and tells the other nations to leave Korean soil. China, with whom the border has never been settled, decides to stay. Now you have the South, the Northern remnants, maybe NATO, against everyone else.
Unlikely, ugly, but a more interesting game.
Will