The death of the last treaty between Russia and the U.S. that limited the size of nuclear arsenals may spark a new arms race, ...

Survivors of the U.S. atomic bombings of Hiroshima and Nagasaki have played a big part in preventing the use of nuclear ...

The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the ...

Regional fears of a U.S. attack on Iran have eased after President Donald Trump said Tehran had assured him that protesters ...

The Soviet Union built the largest nuclear weapon ever detonated, but just before its test, engineers deliberately reduced ...

In the face of such facts, Trump changed his story. He said that Russia and China are conducting secret nuclear tests and ...

In the panic after Sputnik, the US Air Force backed a classified study that explored detonating an atomic bomb on the Moon to ...

The Kremlin said U.S. President Donald Trump has not yet responded to Russian President Vladimir Putin's offer to extend the ...

He played a key role in ending apartheid South Africa’s secret weapons program in the 1980s by helping the African National ...

Russia has said Donald Trump taking Greenland and positioning nuclear weapons on the island would bring about the 'end of the ...

Japan doesn’t seem likely to develop nuclear weapons in the short-term. However, the tensions that triggered this episode are ...

Developing nuclear fusion and modernizing the US nuclear arsenal will require substantial collaboration with the private ...