This Oct. 27, 2004 photo, shows the interior of the Arak heavy water production facility in Arak, 360 kms southwest of Tehran, Iran. A document obtained by The Associated Press Monday, July 18, 2016, says key nuclear restrictions on Iran will ease in a little more than a decade, halving the time Tehran would need to build a bomb if it chose to do so. The document says that 11 to 13 years into the 15-year agreement, Iran can replace the 5,060 inefficient centrifuges it now uses to enrich uranium with up to 3,500 advanced machines. (AP Photo/Fars News Agancy, File)