aims diplomatically, get a peaceful resolution to this issue that prevents iran from getting a nuclear weapon. >> is the deal breaker iran's insistence that it keep the right to enrich uranium? >> well, andrea, first of all, we don't recognize a right to enrich uranium as a part of the nonproliferation treaty. iran has insisted on that in negotiations, but that is not a right that we recognize. it's important to note, though, that in the first step that we're talking about, the first step agreement, what we'd be getting at is halting the progress of iran's program, rolling back elements of that program as we then negotiate the more fundamental issues. the question is, do we go forward with negotiations and allow iran to make progress with its program during the course of those negotiations, or do we essentially hit the brakes, roll back elements of that program as we can see if we can get at a more fundamental, comprehensive resolution to the iranian nuclear program. >> when you say roll back elements, the israelis and some