US intelligence agencies believe China is developing a “new generation” of nuclear weapons — with Beijing having reportedly conducted at least one undisclosed explosive test already. China’s plan to radically advance its nuclear capabilities — beyond its 600 operational warheads — could mean a severe shift in its overall nuclear strategy,

The US military needs to improve its weapons testing processes, according to a new watchdog report. Needed improvements include involving testers early, iterative testing, digital twinning, and user feedback. The Pentagon is prioritizing the rapid ...

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 completely transform its nuclear arsenal into the world’s most technologically advanced,

The Pentagon and the Federal Aviation Administration plan to jointly test a high-energy laser weapon designed to shoot down small drones at White Sands Missile Range in New Mexico. The test, announced in early March 2026,

Late last week, the U.S. leveled an explosive claim: China is planning secret nuclear weapons tests and has already conducted at least one. The undersecretary of state for arms control and international security, Thomas DiNanno, disclosed the major U.S ...

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 hadn't detected activity related to an explosive test.

Scientific knowledge about the damaging effects of nuclear-weapons testing helped to end such tests. Those findings haven’t changed.

Secretary of War Pete Hegseth’s recent announcement that the U.S. will resume testing nuclear weapons has alarmed some nuclear-arms experts. It shouldn’t. President Trump had already announced earlier this year that a resumption of testing “on an ...

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 might be nearing an end. Politicians, including U.S ...

The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the likes of Russia and the United States, it’s a positive one. “As of today, the world has gone eight years, four months, and 11 days ...

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.