Dmitry Medvedev said Moscow had not received a U.S. response to Russia's proposal to extend the New START treaty.

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

The United States openly tracks thousands of nuclear warheads, yet a small number have slipped permanently out of reach. Yes, the US has lost 6 nuclear weapons, and each disappearance left a trail of ...

Add Yahoo as a preferred source to see more of our stories on Google. The agency responsible for designing, building, maintaining and securing U.S. nuclear weapons is facing staff furloughs and its ...

Great power competition gives the United States all the more reason to invest in international cooperative frameworks for ...

European powers are examining how to their bolster nuclear arsenals to guard against Russia amid questions about America’s commitment to NATO.

Add Yahoo as a preferred source to see more of our stories on Google. Donald Trump said on Thursday that he's ordering the US to restart nuclear weapons tests. That would be the first time the US has ...

President Donald Trump has called for the United States to test its nuclear weapons for the first time in three decades. But Trump’s statements about testing — in particular, whether other nations are ...