A US official says a seismic station in Kazakhstan collected evidence of an alleged China nuclear test at Lop Nur in June 2020.

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

The United States is ready to carry out low-yield nuclear tests to match alleged secret explosions by China and Russia, ...

The United States Air Force maintains a small, tightly controlled fleet of aircraft certified to deliver nuclear weapons, and ...

China is on course to have more than 1,000 nuclear warheads in the next few years, according to U.S. intelligence estimates.

State Department official says China's alleged 2020 test was 'a singular explosion', confirms US will return to nuclear testing ...

A top arms diplomat at the State Department recently laid out what might come next as Washington upends decades of federal policies on nuclear proliferation.

The Rulison test — conducted at a depth of 8,425 feet — was the deepest subterranean nuclear-bomb detonation conducted in U.S. history.

The United States is to resume nuclear weapons testing “immediately”, Donald Trump has announced, raising fears of renewed proliferation between the world’s two biggest stockpiles of atomic weaponry.

Tires stick to hot asphalt as I drive the Stuart Highway from Alice Springs northward, leaving the MacDonnell Ranges behind.

The expiration of the New START treaty last week -- long the framework limiting both nations to 1,550 warheads in 700 ...

It is almost inevitable that a new strategic nuclear arms race will be beginning or is underway. With the expiration of the ...