European Union foreign policy chief Federica Mogherini makes a phonecall on the balcony of Palais Coburg, the venue for nuclear talks in Vienna, Austria, July 10, 2015. Iran accused major powers on Friday of backtracking on previous pledges and throwing up new "red lines" at nuclear talks, after the deadline to reach an agreement in time to receive expedited scrutiny from the U.S. Congress expired with no deal. REUTERS/Leonhard Foeger