so, if you talk to the expert, both in south korea and u.s., they fear yongbyon by itself is not enough. especially when we know for sure that they have other nuclear sites, specifically -- >> ambassador yun, these are live pictures. these are live pictures from inside a bilateral meeting. trump and kim. let's listen in. [ speaking in korean ] >> translator: i return surprise to hear about your offer on the tweet and only late in the afternoon i was able to confirm your invitation. yesterday morning, when you expressed the willingness to meet with me here, and also when