Iranian Foreign Minister Mohammad Javad Zarif , second left, gestures next to High Representative of the European Union for Foreign Affairs and Security Policy Federica Mogherini, left, Iranian ambassador to IAEA Ali Akbar Salehi, second right, and Russian Foreign Minister Sergey Lavrov, right, as they pose for a family photo in Vienna, Austria 14 July, 2015. Iran and six major world powers reached a nuclear deal on Tuesday. Photo - Reuters files