S.Korea gravely concerned at North's test threat
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South Korea voiced grave concern on Wednesday over North Korea's plans to test a nuclear device and China urged restraint after the United States said the move would be "an unacceptable threat" to world peace.
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While Russia and China try to convince Pyongyang not to go ahead with its nuclear test, South Korea sends a stern warning to its neighbor
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The United States has received indications North Korea might be trying to test a nuclear weapon, a senior Bush administration said Sunday.
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An increasingly isolated North Korea said  on Tuesday it would conduct its first-ever nuclear test,  blaming a U.S. "threat of nuclear war and sanctions" for  forcing its hand.
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North Korea accused South Korea of mounting a ``smear campaign&#39;&#39; over an explosion last week in North Korea that prompted speculation of a nuclear test.
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North Korea has said that intensifying US hostility toward North Korea and the secret nuclear related experiments in South Korea constitute big stumbling blocks.
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South Korea reacted with shock and  suspicion on Friday to the first declaration from the reclusive  North that it had nuclear weapons and had pulled out  indefinitely from six-party disarmament talks.
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North Korea has accused the United States of threatening war by carrying out a test of its missile defense system and conducting joint military exercises with the South.
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Japan pressed on with efforts on Thursday to secure a U.N. condemnation of North Korea's nuclear test threat after Washington, in its starkest warning so far, said it would not live with a nuclear-armed Pyongyang.
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South Korea&#39;s military forces were reported on high alert after finding signs of possible North Korean infiltration across its heavily armed border.
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North Korea is threatening to use terrorism against the South, Seoul's intelligence agency said in a rare public advisory on Monday, and warned South Korean citizens in China and Southeast Asia to be on their guard.
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North Korea's neighbors scrambled Wednesday to forge a common front against Pyongyang's threatened nuclear test, with South Korea warning of a regional atomic arms race that could upend the regional balance of power.
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International Atomic Energy Agency (IAEA) Director General Mohamed ElBaradei said that South Korea&#39;s failure to report its nuclear experiments to the IAEA in the past is of serious concern.
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The UN's nuclear watchdog expresses "serious concern" at South Korea's secret nuclear research.
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Negotiators are wary over how the North Koreans will respond to talks since their first atomic blast test more than two months ago.
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North Korea angrily mocked international criticism of its multiple missile tests, threatening on Thursday to fire off more rockets.
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South Korea&#39;s nuclear and uranium experiments that were conducted years ago are under scrutiny at the International Atomic Energy Agency.