>> and here we are, this is happening close to his time zone, you know, sort of in his realm. trump has traveled around the world to go there. and the u.s. keeps saying, denuclearization is what this is all about. we're not going to move on that. the secretary of state just departed his hotel. but he's made it very clear, a few hours ago, what this is all about. here he is. >> the complete and verifiable and irreversible denuclearization of the korea peninsula is the only outcome that the united states will accept. >> north korea already has entered the nuclear club at this point. and we know that. are trump and kim on the same page on denuclearization? is there any way north korea would do that in the way the united states defines it? >> that's the game here. what does denuclearization mean? each side has a different definition of that. the trick is, can they reach a compromise in the negotiation at