EU foreign policy chief Catherine Ashton (R) and Iran’s chief negotiator Saeed Jalili (C) walk before their meeting in the garden of the Iranian Consulate in Istanbul

EU foreign policy chief Catherine Ashton (R) and Iran’s chief negotiator Saeed Jalili (C) walk before their meeting in the garden of the Iranian Consulate in Istanbul September 18, 2012. REUTERS/Osman Orsal

Iran awaits outcome of U.N. meeting before further nuclear talks