. >> jessica mathews. >> thank you. jessica mathews. sometimes bargaining chips, if they never get spent, presumably have very little value. has there ever been a time in your opinions when it would have made sense for the united states to say yes, the war is over, or is there such a time in the foreseeable future? >> is that for either or for both of those? >> yes. >> my own personal view at some point if we could reach her we're sort of the point where we were at in 2005 with a joint statement they came out of the early workings of the six-party talks, that yes, we should say we don't want you to have nuclear weapons and just sort of agreed that you won't. we need a peace regime to replace the armistice. yes, let's work on that. we need diplomatic relations between all countries concerned and some countries need energy and economic assistance, so let's work on that agenda. we've never been able to work out the problem of sequencing. i don't know many people in the u.s. who would argue that we shouldn't move toward an end of the war, w