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In this undated image distributed on Sunday, September 3, 2017, by the North Korean government, shows North Korean leader Kim Jong Un at an undisclosed location.
In this undated image distributed on Sunday, September 3, 2017, by the North Korean government, shows North Korean leader Kim Jong Un at an undisclosed location.

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North Korea claims hydrogen bomb test

Dana Bash discusses North Korea's latest nuclear test with Gordon Chang and David Sanger

North Korea claims hydrogen bomb test

Dana Bash discusses North Korea's latest nuclear test with Gordon Chang and David Sanger