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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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    How China feels about North Korea's nuclear ambitions

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How China feels about North Korea's nuclear ambitions

CNN's Matt Rivers looks at what's at stake for China as North Korea moves ahead with its secretive nuclear weapons program.

How China feels about North Korea's nuclear ambitions

CNN's Matt Rivers looks at what's at stake for China as North Korea moves ahead with its secretive nuclear weapons program.