undecided democrats in the senate and in the house. >> getting beyond politics, even if this thing does come into effect, this is going to be a major national security challenge for decades to deal not just with iran and its future nuclear capabilities but that of several neighbors. this will be front and center for not just this president and his successor but his successor's successor. >> when you ask opponents of the deal, what's the other option? they back up six months and say the deal they would have struck. no, richard. what's the other option now if this deal is voted down, what will happen? that's what the choice is. >> at this point i tend to agree with you. the choices are narrow. if this deal is voted down, we don't know what iran will do but all odds are that iran would do more in the nuclear area. >> this is why it's a no-brainer. this is why the president is being sharp and i know you call