progress. >> speaking to iran, his point, the administration's point, you cannot deliver the kind of i'm going to attack you when you reach 20% on this percentage of your enriched uranium fuel, that a little ambiguity is a big thing that iran knows and israel knows and the rest of the world knows that the united states is not going to let iran get a weapon or capability of getting a weapon. >> first of all, i think there's a balance. you need to strike a balance. what many including governor romney and congressman ryan and others around the world have said you have to be specific about this capability point. that you have to be able to signal to the iranians and the world that just building the weapon or getting close to building the weapon, is not the red line. having the tools at their disposal, that they would be easily assembled is a big problem and must be stopped because if they have the tools to assemble a weapon, easily assemble a weapon, it will have the impact that the iranian