'We ’ ve been clear that the end of March is a firm deadline , and that ’ s simply because these negotiations have taken place over the course of more than a year , ' White House spokesman said Friday . U.S. , along with Britain , China , Russia , Germany and France trying to thrash out the framework for a deal by Tuesday , March 31 . Talks are aimed at reducing the ability of Iran to develop nuclear weapons . White House still believes the coalition has a 50 percent chance of convincing Iran to make the required concessions by the deadline . Details of the deal would be hashed out over the summer before July 1 .
'We ’ ve been clear that the end of March is a firm deadline , and that ’ s simply because these negotiations have taken place over the course of more than a year , ' White House spokesman said Friday . U.S. , along with Britain , Russia , China , Germany and France trying to thrash out the framework for a deal by Tuesday , March 31 . Talks are aimed at reducing the ability of Iran to develop nuclear weapons . White House still believes the coalition has a 50 percent chance of convincing Iran to make the required concessions by the deadline . Details of the deal would be hashed out over the summer before July 1 .