FILE - In this Dec. 23, 2019 file photo released by the Atomic Energy Organization of Iran, technicians work at the Arak heavy water reactor's secondary circuit, as officials and media visit the site, near Arak, Iran. The landmark 2015 deal between Tehran and world powers meant to prevent Iran from obtaining nuclear weapons has been teetering on the edge of collapse since the U.S. pulled unilaterally in 2018. The EU said Wednesday, Jan. 8, 2020, that it will “spare no effort” to keep the deal alive, but with tensions between the U.S. escalating into open hostilities it's seeming increasingly unlikely that will be possible. (Atomic Energy Organization of Iran via AP, File)
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