objectives that are accomplished in the agreement that are very important. iran has to get rid of its 20% enriched stockpile. it has to freeze its stockpile of 3.5% uranium. it has to freeze work on the reactor, the heavy water reactor at iraq. all those things i think are very positive, and what we give up is a small lifting of the freeze on iranian assets. not much to help the iranian economy. so i'm concerned about the talk of additional round of sanctions right now. the congress really needs to be working in concert with the president on this. this is one of the preeminent national security challenges of the day. and we don't do well in negotiation if we are internally divided. >> but you know what the argument is, including from some on your own side that this was an uneven agreement. that in fact iran got more than it gave, and they can't be trusted on this. >> well, i agree that they can't be trusted and no one is asking for a blind trust or any trust really of the iranians, that's part of the reason why the agreement also includes daily