The B-21 Raider is slated to become the "backbone" of the U.S. bomber force.

A U.S. official focusing on arms control has provided what he called new, declassified details of a Chinese underground ...

The United States military has tested its Minuteman lll nuclear ballistic missile at Vandenberg Space Force Base in ...

Beijing and Moscow build their arsenals while the U.S. restrains itself.

Add Yahoo as a preferred source to see more of our stories on Google. The US said it has intelligence that China conducted banned nuclear explosive tests. The nuclear monitoring organization said it ...

Last year, President Donald Trump shocked many people when he instructed the government to resume nuclear testing “on an ...

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 ...

After a 4.3 magnitude earthquake hit Khonj, speculation of a secret Iranian nuclear test erupted. We break down the seismic signatures, enrichment levels, and expert analysis to determine if Tehran ha ...

The U.S. Department of Energy (DOE) has launched a novel pilot program that will allow private developers to build and operate full-scale advanced nuclear test reactors outside of the national ...

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 ...

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 ...