POOL PHOTO French Foreign Minister Laurent Fabius, German Foreign Minister Frank-Walter Steinmeier, European Union High Representative Federica Mogherini, Iranian Foreign Minister Mohammad Javad Zarif and Head of the Iranian Atomic Energy Organization Ali Akbar Salehi pose for a picture prior to their final plenary meeting at the United Nations building in Vienna, Austria, Tuesday, July 14, 2015. After 18 days of intense and often fractious negotiation, diplomats Tuesday declared that world powers and Iran had struck a landmark deal to curb Iran’s nuclear program in exchange for billions of dollars in relief from international sanctions, an agreement designed to avert the threat of a nuclear-armed Iran and another U.S. military intervention in the Muslim world. (Joe Klamar/Pool Photo via AP)