Germany has returned over 20 pounds of highly enriched uranium fuel to the U.S. for safeguarding from terrorists or potential misuse.

The United States and North Korea are being flexible in their effort to reach a compromise to resolve the dispute in the North’s nuclear disarmament process,...

The Nuclear Regulatory Commission is delaying a decision on whether to allow EnergySolutions Inc. to import the largest-ever amount of nuclear waste into the U.S.

A U.N. nuclear conference has indirectly criticized Israel for refusing to put its atomic program under international purview.

Israel accused North Korea on Saturday of covertly supplying at least half a dozen Mideast countries with nuclear technology or conventional arms.

Israel accused North Korea on Saturday of supplying at least half a dozen rogue Mideast regimes with nuclear technology or conventional arms. World powers, meanwhile,...

Israel is accusing North Korea of supplying at least half a dozen Mideast countries with conventional arms or nuclear technology.

The top U.S. nuclear envoy held talks with his Chinese counterpart in Beijing on Saturday, an embassy spokesman said, after a trip to North Korea failed to stop the...

Russia hopes to deploy a new nuclear missile next year designed to penetrate anti-missile defenses and will build eight submarines to carry it, defense officials said...

The chief U.S. nuclear envoy said Friday his negotiations in North Korea were “substantive” and “lengthy,” but gave no indication how much...

The doomsday script was never used by the British Broadcasting Corp., but decades later the message remains haunting.

The Senate approved a controversial nuclear deal with India on Wednesday, clearing the way for the United States to export nuclear know-how to India after a ban lasting...

India said Thursday that U.S. congressional approval of a civilian nuclear pact was a sign that “the world needs India as India needs the world.” Pakistan...

A leading Iranian nuclear envoy on Thursday suggested the country could reconsider its uranium enrichment program if it gets cast-iron guarantees of regular...

Secretary of State Condoleezza Rice will travel Friday to India to commemorate approval of a landmark U.S.-India nuclear cooperation accord, a foreign affairs victory...

Secretary of State Condoleezza Rice will travel to India on Friday to commemorate approval of a landmark U.S.-India nuclear cooperation accord.

Washington’s top nuclear envoy extended his stay in North Korea and held more talks Thursday in a bid to break an impasse over the communist country’s...

Washington’s top nuclear negotiator drove to the capital of communist North Korea on Wednesday with a possibly face-saving proposal to persuade the Stalinist...

The Senate on Wednesday voted to overturn a three-decade ban on atomic trade with India, giving final congressional approval to a landmark U.S.-India nuclear...

The Senate has voted to overturn a three-decade ban on atomic trade with India.