Hydronuclear experiments, barred globally since the 1990s, may lie behind President Trump’s call last month for the United ...

President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. Trump suggests the U.S. will resume testing nuclear weapons President Donald ...

China’s nuclear weapons development has long concerned the U.S., which has warned that the East Asian power could possess ...

The confusion rattled allies and arms control experts alike. Energy Secretary Chris Wright soon intervened to clarify that any U.S. testing would involve not nuclear explosions but “what we call ...

The Minuteman III intercontinental ballistic missile will take flight from Vandenberg Space Force Base in California.

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 ...

The United States opened the nuclear era in July 1945 with the test of a 20-‌kiloton atomic bomb at Alamogordo, New Mexico, ...

President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. "We've halted many years ago, but with others doing testing I think it's ...