Without the New START treaty, which caps the number of deployed nuclear warheads at 1,550 on each side, there will be no ...

Beijing, Moscow and shaken American allies are seeking new warheads as President Trump ends more than a half century of ...

The last remaining nuclear arms control treaty between the United States and Russia is set to expire Thursday, leaving the world without a significant nuclear agreement between the two superpowers ...

The Trump administration confirmed the U.S. will take part in high-level talks with Iran in Oman instead of Turkey, as ...

DUBAI, United Arab Emirates -- DUBAI, United Arab Emirates (AP) — Iran and the United States will hold talks Friday in Oman, ...

The last treaty curbing atomic weapon production from Russia and the US has ended, meaning there are now no restrictions ...

It’s worth looking at high-assay low-enriched uranium, or HALEU, specifically. This fuel is enriched to higher concentrations ...

By Guy Faulconbridge and Mark Trevelyan MOSCOW, Feb 5 (Reuters) - Russia and the United States are no longer bound by any ...

The last major nuclear treaty between the United States and Russia just expired. Our national security correspondent David E.

MOSCOW, Feb 5 (Reuters) - The Kremlin said on Thursday that Russia would continue taking a responsible approach to strategic ...

The last remaining nuclear arms pact between Russia and the United States has expired, removing caps on their atomic arsenals ...

A police officer with the Civil Nuclear Constabulary exchanged sexual images with a 12-year-old girl, a court has heard.