South Korea asks military to step up monitoring of North's hydrogen bomb test

South Korea`s Defence Ministry asked its armed forces to step up their monitoring of North Korea after the isolated country successfully conducted a test of a miniaturised nuclear device.

Seoul: South Korea`s Defence Ministry said on Wednesday that the country`s armed forces are stepping up their monitoring of North Korea after the isolated country said it successfully conducted a test of a miniaturised nuclear device.

Separately, South Korea`s Yonhap News agency said President Park Geun-hye will preside over a national security council meeting at 0430 GMT.

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