Nuclear Weapon | featured news

North Korea has confirmed its intention to carry out a third nuclear test, saying it is the “demand of the people.” It comes after the UN tightened sanctions against the regime, following its December long-range rocket launch. "The people's demand is that we must do something even greater than a nuclear test. The United Nations Security Council has left us with no other options. We have no other ways but to push forward to the final showdown," Rodong Sinmun, the official daily newspaper of the ruling communist party, wrote in a commentary on Saturday.

China's apparent decision not to block expanded United Nations sanctions against North Korea for its satellite-cum-missile launch last month is good, if mysterious, news. Good, because China has traditionally resisted punishing North Korea for its misdeeds, arguing that engagement is more likely to bring results. Mysterious, because its reasons for changing its mind could be manifold.

North Korea is warning that it will strengthen its military and nuclear defenses in reaction to what it calls U.S. hostility toward Pyongyang....

The Senate on Friday resoundingly approved new sanctions on trade with Iran's energy, port, shipping and ship-building sectors, its latest effort to ratchet up economic pressure on Tehran over its nuclear program.

The United States set a March deadline on Thursday for Iran to start cooperating in substance with a U.N. nuclear agency investigation, saying it would otherwise urge reporting the issue to the U.N. Security Council.

Iran will go on refining uranium "with intensity" and the number of enrichment centrifuges it has operating will rise substantially in the current year, the country's nuclear energy chief was quoted as saying on Wednesday.

A diagram obtained by The Associated Press shows that Iranian scientists have run computer simulations for a nuclear weapon that would produce more than triple the explosive force of the World War II bomb that destroyed Hiroshima.

Six world powers are committed to holding a new round of nuclear negotiations with Iran as soon as possible, said a spokesman for the European Union's foreign policy chief, who represents the six in talks with Iran.

Iran is ready to double the output at its underground uranium enrichment facility, the UN's International Atomic Energy Agency says.

Iran is believed to have increased the number of centrifuges in an underground nuclear plant by nearly a third in three months, diplomats say, underlining the tough task facing major powers pressing Tehran to curb its atomic activity.