Add Yahoo as a preferred source to see more of our stories on Google. A subsurface atomic test near Yucca Flats, Nev., in March 1955. (U.S. Atomic Energy Commission via AP) (U.S. Atomic Energy ...

President Donald Trump’s announcement that the U.S. would revive nuclear weapons testing — which the U.S. has not done since 1992 — left experts, lawmakers and military personnel scratching their ...

WEST PALM BEACH, Fla. (AP) — New tests of the U.S. nuclear weapons system ordered up by President Donald Trump will not include nuclear explosions, Energy Secretary Chris Wright said Sunday. It was ...

Secretary of War Pete Hegseth’s recent announcement that the U.S. will resume testing nuclear weapons has alarmed some nuclear-arms experts. It shouldn’t. President Trump had already announced earlier ...

Minutes before walking into a high-stakes meeting with Chinese President Xi Jinping this past week, President Donald Trump announced what could prove to be a stunning shift in American nuclear policy.

Nuclear weapons tests were once a regular occurrence, but most countries haven’t tested in decades, following the adoption of the Comprehensive Nuclear-Test-Ban Treaty in 1996. Now, that moratorium ...

Trump's announcement sparked quick replies from Russia and China, which both possess large stockpiles of nuclear weapons ISSEI KATO/POOL/AFP via Getty President Donald Trump announced this week that ...

In what would be a major shift in a decades-old American policy against global nuclear proliferation, President Trump says he has directed the Pentagon to “start testing” U.S. nuclear weapons “on an ...

WEST PALM BEACH, Fla. (AP) — New tests of the U.S. nuclear weapons system ordered up by President Donald Trump will not include nuclear explosions, Energy Secretary Chris Wright said Sunday. It was ...

“I think the tests we’re talking about right now are system tests,” Wright said in an interview on Fox News’ “Sunday Briefing.” “These are not nuclear explosions. These are what we call noncritical ...

Energy Secretary Chris Wright said the testing ordered up in a surprise announcement by President Trump last week would focus on “the other parts” of nuclear weaponry. By Zolan Kanno-Youngs The ...