FILE -- In this Tuesday, Feb. 11, 2014 file photo, Iranian President Hassan Rouhani, delivers a speech during an annual rally commemorating anniversary of the 1979 Islamic revolution, at the Azadi 'Freedom' Square in Tehran, Iran. Rouhani said Sunday, May 11, 2014 that his country has nothing to offer except transparency in nuclear talks with world powers, rebuffing hard-liners as negotiators seek a final deal over the Islamic Republic's contested program. (AP Photo/Vahid Salemi, File)