[Rockstar]

I don't think for a moment anyone in this world (except maybe Moon) thinks Un is a reasonable person. He doesn't stay in power by being reasonable he stays in power by deceit, killing his own family and the opposition and starving his own citizens. Again its just a w.a.g. but he was thrust onto the world stage which puts the spot light on him, it means he will have to negotiate and bend to others will, which could be seen as a sign of weakness to the internal hardliner opposition. I think Fatboy might be in survival mode and best course of action for him at the moment is to sitcan the summit and attempt negotiations directly with Moon who probably gets all teary eyed at the prospect of reunification and getting re-elected.

Also China and North Korea aren't exactly bosom buddies either, it wouldn't be the first time North Korean actions embarrassed China.