FILE - This Jan. 15, 2011 file photo, shows a part of Arak heavy water nuclear facilities, near the central city of Arak, 150 miles (250 kilometers) southwest of the capital Tehran, Iran. Iran acknowledged Monday, July 1, 2019, it had broken the limit set on its stockpile of low-enriched uranium by the 2015 nuclear deal, marking its first major departure from the unraveling agreement a year after the U.S. unilaterally withdrew from the accord. (Mehdi Marizad/Fars News Agency via AP, File)