In the midst of trading promises with both allies and adversaries during his recent tour of Asia, U.S. President Donald Trump dampened the positive mood with an ominous pronouncement. “Because of ...

Add Yahoo as a preferred source to see more of our stories on Google. President Donald Trump's order late Wednesday night for the U.S. to resume nuclear weapons tests has confounded officials and ...

The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing are unraveling.

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 ...

President Donald Trump ordered the Department of War to resume testing nuclear weapons “on an equal basis” with Russia and China on Thursday, a practice halted by the U.S. in 1992. The announcement ...

Prior to his meeting with China’s President Xi Jinping in Busan, South Korea on October 30, United States President Donald Trump wrote that he has ordered the U.S. military to resume nuclear testing ...

Energy Secretary Chris Wright revealed the U.S. will not be testing nuclear explosions, putting to rest questions over whether the Trump administration would reverse a decades-old taboo. Testing will ...

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 ...

President Trump's comments about restarting weapons tests are not likely to lead to mushroom-cloud explosions over the New Mexico desert or seismic shaking underground in Nevada, according to the ...