anna: how much of this -- support does kim have in terms of denuclearizion?id: it is difficult to say. >> he has removed top leadership in the military. topd: he has removed leadership and also people have been a threat to him. -- his approaches to leadership have been murderous. it is not to say that he is not prepared to move forward from this place, if he really does have the best interest of his people at heart. if.n, that is a big i believe his interest in maintaining power is real. a country open up control and power that you have he may bvet it ise? necessary to do so, and he ma believe that it is not necessary to do so. i think the way forward is very difficult. anna: david, talking about the people of the korean peninsula, we saw the north and south korean leader already meeting. they have already done some talking. said that he had a sleepless night. what do you think success will look like from the south korean perspective in this very short time? and then longer, into the future, i guess? a continued comby the united states for the security of sou

actually getting any kind of denuclearizion and/or declarations would not have to happen under some sort of existing multilateral scheme involvinr nug heear weapons states, rather than a separate standalone deal with them, and if that was the case, what are nse o? toby: good questions. who would like to take up? i am not a nuclear physicist. i know we have one on the panel. talk about the decades involved in verifying denuclearization, that would be welcomed. tong: there was his well-known -- this well-known study saying, if all things work well, it would take at least 15 years to achieve denuclearization. and he was primarily looking at the physics side of the equation. need to looke also at the political side. i agree. i think kim jong-un was indicating that if there is no threat to north korea, north korea would have no reason to keep nuclear weapons. i think he was sincere when he said this. the only way to make north korea safe is for the u.s.-north korea relationship to get fundamentally transformed. from a hostile one to a friendly one. just like the u.s.-be a non-relationship tra