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

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

US intelligence agencies believe that China is developing a new generation of nuclear weapons and has conducted at least one covert explosive test in recent years as part of a broader push to ...

State Department alleges China conducted nuclear test in 2020, reigniting debate over U.S. testing moratorium and ...

But the Comprehensive Test Ban Treaty Organization said that there was insufficient data to confirm the allegation. Read more ...

Beijing said it follows a no-first-use policy and keeps nuclear forces at a minimum level, after Washington alleged expansion ...

Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald ...

A U.S. official revealed details of an alleged Chinese nuclear test, urging global cooperation for disarmament while ...

A U.S. official focusing on arms control has provided what he called new, declassified details of a Chinese underground nuclear test nearly six years ago. Also Monday, the assistant secretary of state ...

The U.S. government revealed new intelligence on Tuesday suggesting China may have conducted an ...

(CNN) — The United States on Friday accused China of carrying out a secret nuclear test in 2020 as the Trump administration calls for a broader nuclear weapons agreement including both China and ...

The US has presented new seismic data to buttress its recent allegation that China has secretly carried out low-yield nuclear tests, challenging Beijing’s insistence that it has scrupulously observed ...