North Korea has barred international monitors from a key nuclear facility and threatened to restart its nuclear programme in a serious setback to efforts to remove atomic weapons from the Korean peninsula.
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North Korea threatens to restart nuclear programme
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South Korea shuts down two nuclear reactors
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North Korea threatens nuclear strike
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North Korea re-admits UN monitors to nuclear complex
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N Korea threatens another nuclear test
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North Korea expels UN monitors
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Obama urges North Korea to halt moves for nuclear arms
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Dprk threatens South Korea with destruction
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North Korea keeps border closed
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Will Korea be able to recycle nuclear ..
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S. Korea expresses concern over Japan's release of radioactive water
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North Korea calls for end to hostile relations with US
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Kim Jong-Un threatens to 'wipe out' island
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North Korea says it will stop disabling nuclear facilities
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North Korea holds more than 138,000 people in detention facilities
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North Korea threatens to launch retaliatory ``sacred war'' on South Korea
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Japan faces nuclear meltdowns following last week's tsunami