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Residents look up at a big screen TV in front of Pyongyang railway station showing television presenter Ri Chun-Hee announcing that the country successfully tested a nuclear warhead earlier in the day on September 9, 2016.
Residents look up at a big screen TV in front of Pyongyang railway station showing television presenter Ri Chun-Hee announcing that the country successfully tested a nuclear warhead earlier in the day on September 9, 2016.

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Nuclear expert Tong Zhao tells Kristie Lu Stout that North Korea's goal is to put a nuclear warhead on a missile