Nuclear | featured news

A lively and healthy-looking Fidel Castro appealed to President Barack Obama to prevent a global nuclear war in an emphatic speech Saturday that marked his first official government appearance since emergency surgery four years ago.

The Obama administration has told U.S. lawmakers that a nuclear cooperation deal with Vietnam is unlikely to include a coveted promise by the Hanoi government not to enrich uranium, congressional aides say.

The head of Iran's nuclear energy agency announced Saturday that the country had launched a "serious" nuclear fusion research program, according to state-run Press TV.

North Korea warned Saturday that joint U.S. and South Korean military exercises poised to begin this weekend amount to a military provocation that will draw a "powerful" nuclear response from Pyongyang.

The United States announced new sanctions against North Korea on Wednesday including on the purchase and sale of arms and an asset freeze on individuals.

President Barack Obama on Thursday signed into law far-reaching new sanctions on Iran that aim to squeeze the Islamic Republic's fuel imports and deepen its international isolation.

The Senate on Thursday approved tough new unilateral sanctions aimed at squeezing Iran's energy and banking sectors, which could also hurt companies from other countries doing business with Tehran.

Abnormally high radiation levels were detected near the border between the two Koreas days after North Korea claimed to have mastered a complex technology key to manufacturing a hydrogen bomb, Seoul said Monday.

EU leaders back new sanctions on Iran that are tougher than recent measures adopted by the UN Security Council.

The chatter began weeks ago as armchair engineers brainstormed for ways to stop the torrent of oil spilling into the Gulf of Mexico: What about nuking the well?

Decades ago, the Soviet Union reportedly used nuclear blasts to successfully seal off runaway gas wells, inserting a bomb deep underground and letting its fiery heat melt the surrounding rock to shut off the flow. Why not try it here?