I N THE DEPTHS of the cold war, American spooks and generals came to suspect that the nuclear-weapons club was about to gain ...

Royal Navy unveiled the Project Scylla breakthrough as the Kremlin steps up use of nuclear drones and deep-sea sabotage subs.

The Kremlin warned of escalating nuclear tensions and said Russia was taking action to protect its security in response.

Eighty years after the first test, why was there so little dissent at Los Alamos — and what does it mean today?

Perhaps our eyes deceived us, but there was Mr. Trump diving into talks to stop the carnage in Ukraine and Gaza and seeking a ...

Russia said on Tuesday that it detected a rise in international tensions and was monitoring developments after Britain's Times and Telegraph newspapers reported that the United States had stationed ...

US president also urged the CNN TV channel to fire "their phony reporter" and apologize to him and air force pilots who he said destroyed the nuclear sites ...

Iran continues to refuse proposal it join regional consortium for enriched uranium as officials prepare for meetings with ...

Iran schedules diplomatic meetings with Russia, China and European nations as the deadline approaches for a new nuclear deal ...

The third round of Ukraine-Russia negotiations in Istanbul could take place on 23-24 July, focusing on prisoner exchanges and ...

Iran could withhold security commitments if European states invoke a U.N. mechanism to reimpose international sanctions on ...

A new round of negotiations between Ukraine and Russia may take place in Istanbul this week, tentatively scheduled for 23-24 ...