Oh and as far as relasing hostages and retrieving remains:  Kim promised nothing in writing, so basically he pinky-promised.  Kim has been periodically releasing hostages for years.  Kim's promise to denuclearize is also just verbal, and Trump says they didn't have time to put jack shit in writing because Kim also wanted to get out of there within 7 hours and Trump appears desperate enough for an optical & sound-bite win for his reality show-believing supporters back home so he readily agreed.  China is the big winner here all told, behind the scenes, and maybe Russia.  We'll see how all this plays out very soon.