FILE - This Oct. 27, 2004 file photo, shows the exterior of the Arak heavy water production facility in Arak, Iran, 360 kms southwest of Tehran. Iran began new operations at the Arak heavy water nuclear reactor on Monday, Dec. 23, 2019, intensifying pressure on Europe to find an effective way around U.S. sanctions that block Tehran’s oil sales abroad. (AP Photo, File)
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