So while there is no evidence at all that Iran has any significant quantity of nuclear material or any nuclear weapons, Iran is a much more difficult nuclear issue to resolve for the United States.

Secretary Rice has implemented a subtle but important shift in U.S. policy, ... There is no question that the lack of flexibility for the negotiators precluded any possibility of getting a deal for the past three years. Clearly, we are now in a period of give-and-take and genuine negotiations.

Secretary Rice has implemented a subtle but important shift in U.S. policy. There is no question that the lack of flexibility for the negotiators precluded any possibility of getting a deal for the past three years. Clearly, we are now in a period of give-and-take and genuine negotiations.

You no longer heard comments about tyrants and pygmies. It may seem to be a small matter, but it's very important diplomatically.

You cannot make a nuclear weapon out of this, you can't use it for a dirty bomb.

Iran is a signatory of a [nuclear] nonproliferation treaty,