North Korea can never be made to abandon its nuclear weapons programme, South Korean President Lee Myung-Bak said Friday, arguing that only regime collapse could remove the threat from Pyongyang.
President Barack Obama pledged Wednesday a "steadfast" commitment to defend Japan, including preventing nuclear attacks on its ally in the wake of North Korea's third nuclear test.
Two days after North Korea's nuclear test, South Korea touted Thursday the deployment of a new cruise missile capable of hitting targets in the North "anywhere, anytime".
With a defiant nuclear test, North Korea has shown it poses an increasingly credible threat but some doubt whether even the notoriously bellicose regime would ever use weapons of mass destruction.
Britain on Tuesday strongly condemned North Korea's announcement that it has staged its most powerful nuclear test yet and called for a "robust response" from the UN Security Council.
North Korea staged an apparent nuclear test Tuesday in a striking act of defiance that, if confirmed, is sure to trigger global condemnation from enemies and allies alike.
UN leader Ban Ki-moon warned Thursday that a nuclear test by North Korea could blow up hopes of an eventual reconciliation by "tying the hands" of the South's incoming president.
North Korea's expected atomic test will offer a rare chance to gauge where its nuclear programme is headed, with most expert attention focused on what type of device is detonated and how.
North Korea has vowed to carry out a third nuclear test, but scientists and concerned foreign governments may have a tough time verifying the actions of the reclusive state.
A picture of North Korea's Kim Jong-Un with a smartphone has triggered fevered speculation about which brand is favoured by the leader of one of the world's most repressive nations.
South Korea and the United States launched a joint naval exercise involving a US nuclear submarine Monday, as tensions rise on the Korean peninsula ahead of an expected nuclear test by North Korea.
North Korea has covered the entrance to a tunnel at its nuclear test site in an apparent effort to avoid satellite monitoring ahead of a widely expected detonation.
South Korean President Lee Myung-Bak held an emergency security meeting Thursday that warned North Korea of "serious consequences" if it went through with an expected nuclear test.
Weeks after its chairman Eric Schmidt's secretive visit to North Korea, Google has rolled out a detailed map of the isolated state that even labels some of its remote and infamous gulags.
New satellite images reveal ongoing activity at North Korea's atomic test site, according to a US research institute, as expectation mounts of an imminent nuclear detonation by the isolated state.
North Korea's sole major ally China will decrease aid to Pyongyang if it goes ahead with a planned nuclear test, state-run media said in an unusually frank warning on Friday.
North Korea said Thursday it planned to carry out a third nuclear test and more rocket launches aimed at its "arch-enemy" the United States in response to tightened UN sanctions, but offered no timeframe.
A defiant North Korea on Wednesday condemned a new round of UN sanctions and hinted it might carry out a nuclear test, while ruling out a resumption of talks on denuclearising the Korean peninsula.