Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

The United States has not conducted a nuclear weapons test since 1992, and thus there was widespread surprise when President Trump indicated, shortly before a meeting with China’s Xi Jinping, that he ...

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 ...

Senior Russian officials on Nov. 11 said they were still waiting for a White House explanation about what President Donald Trump meant he when said he had instructed the Pentagon to resume nuclear ...

Donald Trump’s command for the United States to resume nuclear weapons testing will not include explosive tests, for now, according to Energy Secretary Chris Wright. Wright, whose agency oversees the ...

President Trump’s call to resume nuclear tests was muddied this week when Energy Secretary Chris Wright said the United States would not resume explosive testing, which was last conducted in the 1990s ...

MAJURO, MARSHALL ISLANDS — Lemeyo Abon learned about snow from the movies played on projectors by visiting American sailors. But living on Rongelap — a remote tropical atoll in the central Pacific ...

Should the U.S. and Russia resume nuclear testing? The answer to that question must be a resounding “No.” Yet President Donald Trump and Russian leader Vladimir Putin, eager to project strength, have ...

WASHINGTON — Democratic senators representing states that bore the brunt of the fallout from explosive nuclear weapons testing are seeking to pass legislation that would bar President Donald Trump ...

Discussing nuclear weapons earlier this month, Chinese Foreign Ministry spokesperson Mao Ning said the nation “is committed to peaceful development, follows a policy of ‘no first use’ of nuclear ...

During the Cold War the U.S. considered putting nuclear weapons on balloons and letting them float into enemy territory for a strike.