US intelligence agencies believe China is developing a “new generation” of nuclear weapons — with Beijing having reportedly ...

Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald Trump vows to restart U.S. tests.

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.

At a event in Washington D.C., A U.S. official said a remote earthquake in 2020 was caused by a Chinese nuclear test.

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

Hydrogen bombs cause a bigger explosion, which means the shock waves, blast, heat and radiation all have larger reach than an ...

C ould nuclear bombs be harnessed to help people? As the Cold War raged on in the 1950s, scientists building nuclear weapons began to ponder whether they could be put toward posit ...

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 ...

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 ...

Deterring Russia, collecting motherly advice and sending postmortem postcards, through readers’ eyes.