>> president moon needs absolute clarification from north korea by what they mean by denuclearization. what they used do mean used to be a very different thing from what we think of denuclearization. it usually talks about u.s. troops out of the south korea, and extending the umbrella that the u.s. to protect south korea, that's the only way that north korea feels the region's security can be guaranteed. so president mean needs clarification on that. >> secretary albright talk about the two-years effort, a lot was done. we learned that mike pompeo made a trip i get to have conferringing about logistic. given that, what do you make of the summit?