am -- we should temper the expectation of how well it's going to go. we don't have a whole lot of time to prepare, may just around the corner and if the summit does not produce results i'm very concerned because then we have used this engagement card or negotiation card that does not hold a lot of different things we can do afterwards. we need to make sure the summit goes well between trump and kim jong-un. >> the stakes are just so high here. >> very high. >> and north korea is trying to increase its leverage. i wonder what you think about the u.s. i want to talk about the john bolton factor. he is about to take over as national security adviser and recently made the case for a preem. ive attack against north korea. does that change the cal can you husband and give president trump leverage to say he's very serious and there could be major repercussions if a solution isn't found? >> it's part of the calculation that president trump wants to come into this negotiation with north korea from a position of