iran has agreed to refrain from purcha purchasingweapons grade mru tone numb for at least 15 years. and if they begin to do that, we will know it immediately. iran has always agreed to accept the additional protocol which is an outgrowth of the failure of the north korea experience, which put in additional access requirements precisely so we do know what iran is doing, and they have to ratify it before the u.n. sanctions are lifted at the end of this process. they have to have passed it. they have agreed to live by it from day one. they are going to live by the additional protocol. in addition, there are in additional transparency measures we can go into in the course of this hearing. if iran fails to comply, we will know it, and we will know it quickly, and we will be able to respond accordingly, by reinstituting sanctions all the way up to the most draconian options that we have today, none of them are off the table at any point in time. so many of the measures that are in this agreement are therefore not just for ten years, not just for 15 years, not just for 20 years, not just f