The report was not confirmed by South Korean intelligence sources, but it underlines the uncertainty surrounding the North Korean leader's eventual succession.
North Korea is blamed, but what's Kim Jong-il's strategy?
The US deployed antimissile defense systems in response to reports that North Korea could launch a long-range missile toward the island early next month.
In South, decisive tone of 'joint vision' is seen as sending a strong message to the North.
South Korean President Lee Myung Bak arrives in Washington today seeking a guarantee of American nuclear defense from possible North Korean aggression.
The apocalyptic pronouncements from Pyongyang have a silver lining: They may be motivating the world to take unprecedented action against the North.
But the two women sentenced to 12 years in prison still face awful conditions. Their whereabouts since last week remain unknown.
A tougher stance toward Pyongyang may complicate efforts to negotiate the release of the two women, who were sentenced Monday to 12 years of hard labor.
'Dear Leader' Kim Jong Il has reportedly tapped his youngest son as his successor.
US Defense Secretary Robert Gates promised Saturday that the US will not 'stand idly by,' but the communist nation's example could be a case study in how to side-step diplomacy.
The May 25 test provided the world with a host of data about North Korea's bomb-making abilities. But only Pyongyang knows if the test was a success.
Defense Secretary Gates, off to Singapore for a regional security summit, says US sees no 'crisis' in Pyongyang's 'very provocative' display of force this week.
Q&A: Kim Jong Il's drive to make his nation a nuclear power and how that threatens Asian neighbors.
Pyongyang attacked South Korea’s decision to join a partnership meant to block shipments of nuclear materiel.
Consensus is rising in the international community: Enough cajoling, it's time to get tough.
Monday's explosion dashed hopes that the secretive nation is simply building its weapons program as a bargaining chip.
Monday's explosion – the latest in a series of hard-line moves by Pyongyang – may have been 20 times more powerful than its last test in 2006.
United by a common enemy, South Korea's Navy moves to protect a North Korean cargo ship.
A documentary critical of the North, filmed by a family member of one of the journalists, could complicate their case.
A rare public appearance Thursday at the legislature, where he was unanimously reelected, came days after a missile launch.
Their assertion boosts US view that Pyongyang used Sunday’s launch to develop long-range missile technology, not to explore space.
South Korean fighter pilots are 'ready to scramble' as North Korea prepares a missile launch.
Recent moves to possibly test a long-range missile may be aimed at grabbing US attention.