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

In 1961, the Soviet Union detonated the largest nuclear weapon ever built, a test so powerful it sent shockwaves around the ...

Nuclear weapons tests are among the most violent events humans can trigger, and that violence leaves fingerprints in the ...

(NATALIA KOLESNIKOVA/AFP/AFP) President Donald Trump Thursday sowed confusion among experts with his call for the start of nuclear weapons testing, with some pundits interpreting the announcement as ...

Opinion: This op-ed's authors argue that the president's nuclear testing comments were correct, considering America's aging ...

America’s last nuclear detonation was nothing special. Smaller than the bomb that killed 73,000 people in Nagasaki, it exploded 1,397 feet below the Nevada desert. It shook the ground, created a ...

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 ...

President Donald Trump wrote on Truth Social, his social media site, that he had instructed the Department of War (formerly the Defense Department) to return to “nuclear testing” — although it’s ...

President Donald Trump's comments Thursday suggesting the United States will restart its testing of nuclear weapons upends decades of American policy in regards to the bomb, but come as Washington's ...

CFR scholars provide expert analysis and commentary on international issues. Erin D. Dumbacher is Stanton nuclear security senior fellow at the Council on Foreign Relations. President Donald Trump ...

As the cloud cleared, Air Force bombers dropped in to gather air samples. Researchers hoped that the radioactive fallout ...