FILE - In this Tuesday, Jan. 10, 2017 file Photo, North Korean factory workers are silhouetted at the Pyongyang 326 Electric Wire Factory in Pyongyang, North Korea. Thousands of North Korean laborers work in four U.S.-allied nations in the Persian Gulf, earning hard currency for Pyongyang despite international sanctions as pressure grows over its nuclear weapons program. (AP Photo/Wong Maye-E, File)
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