i think the question is, though, is there really a justification for this summit? one of the big criticisms of the last summit between kim and the president in singapore was that the president gave kim all the leverage because he was getting the advantage of standing side by side with the most powerful man in the world. and the american side didn't really get much out of kim, apart from an undertaking to move toward denuclearization. and the time has passed since that summit, we've seen very little movement toward permanent denuclearization. in fact, u.s. intelligence agencies have suggested that the work on the missile, nuclear programs, is still going on. so i think there's woing to bgoa great deal of pressure on the president to come back from the next summit with something tangible. >> to that point, it was just one month ago, december 20th, cnn headline reads, "north korea will not denuclearize until the u.s. eliminates its own nuclear threat." of course, there were questions