ayatollah.ayatolla ayatollah." >> i think it's ironic to make common cause with the hardliners in iran. it's an unusual coalition. >> reporter: the surprising move was led by senator tom cotton who today defended it. >> the only thing unprecedented is an american president negotiating a nuclear deal with the world's leading sponsor of state terrorism without submitting it to congress. >> reporter: democrats wasted to time as pouncing on this as a ploy. >> juvenile political, pettiness that did i that diminishes. >> reporter: it highlight our divisions. this a military response to iran developing their nuclear capability becomes more likely. these represent senators should