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Topic: North Korea nuclear test site

North Korea's Yongbyon Nuclear Scientific Research Center which is being expanded. (AP/Xinhua, Gao Haorong)

North Korea grows nuclear research site

Shira Tarlo
Test launch of North Korean Hwasong-15 missile, November 30, 2017 (Getty/KCNA via KNS)

North Korea to explode nuclear test site

Nicole Karlis