In this Nov. 13, 1979 photo, Iranians pray and gather in front of the American Embassy in Tehran, Iran, where Islamic revolutionary students had been holding 60 American employees hostage since Nov. 4, 1979. Former Iranian hostages had varied reactions to the news of the nuclear deal between the U.S. and Iran in what is being billed as a trust-building agreement designed to yield a more comprehensive deal six months from now. (AP Photo)