In joint news conference with UK PM Cameron, Obama urged U.S. lawmakers to hold off on any Iran sanction legislation and give Iran a chance to reach ''Yes'' on nuclear deal. Rough Cut (no reporter narration).
ROUGH CUT (NO REPORTER NARRATION). STORY: U.S. President Barack Obama, holding a news conference with UK Prime Minster David Cameron said he hopes that Iran will be able to say "yes" to a nuclear agreement, while conceding that there is less than a 50/50 chance that a deal will be reached. In a joint news conference with Cameron, he urged U.S. lawmakers to exercise patience and hold off on any legislation calling for further sanctions. "There is no good argument for us to try to undercut, undermine the negotiations until they've played themselves out," Obama told reporters. "Congress needs to show patience," he added. "I will be the first one to come to Congress and say we need to tighten the screws." He said he did not rule out military action but underscored that the U.S. would not go on war footing if the talks fail.