and normalization of relations with the united states. so i expect the purpose of the letter is to reassure president trump that he should go ahead with the summit meeting on june 12th, and that at the meeting kim jong-un would be willing to commit in a general way to denuclearization. >> you said that the real work here is after the summit. if the summit doesn't happen, you seem to feel like it will, but if it doesn't happen, what does that mean for all the work that would need to be done after the summit? is it dead in the water? >> well, i wouldn't say that, because you could always delay the meeting. if the -- if the arrangements for the meeting like the negotiations of this summit communique can't be finished by june 12th there is no reason why you couldn't have the meeting a month later on july 12th. so i don't think trump and kim are prepared to give up. i think both leaders want to have a historic summit.