A man in Seoul watches a TV news program reporting a North Korea nuclear test. Photo: AP

North Korea’s nuclear test site has collapsed ... and that may be why Kim Jong-un suspended tests

The mountain’s collapse after a fifth blast last fall has led to the creation of a massive ‘chimney’ that could leak radioactive fallout into the air, researchers have found

Topic |   North Korea nuclear crisis

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A man in Seoul watches a TV news program reporting a North Korea nuclear test. Photo: AP
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