Trump ordered the U.S. military to resume nuclear weapons testing. Why were they stopped and why restart now? What to know.

President Trump said Wednesday that he has instructed the Defense Department to immediately begin testing U.S. nuclear ...

Experts say there are roughly 12,241 nuclear weapons across the world, with just over 9,600 thought to be operational.

Russia said it tested a nuclear-powered cruise missile and torpedo, two of its experimental weapons, in recent days.

Russian President Vladimir Putin, dressed in a military uniform, announced on Oct. 26, 2025, that Russia had successfully ...

President Trump has appeared to suggest on social media that the U.S. resume testing nuclear weapons for the first time in ...

North Korean leader Kim Jong Un, whom Trump tried and failed to connect with during his tour in Asia, also tested strategic ...

ABC News' Luis Martinez and contributor Mick Mulroy discuss President Donald Trump's order to put the U.S on equal basis with ...

Trump announced late Thursday that he had ordered the Pentagon to begin testing nuclear weapons on an “equal basis” with ...

President Donald Trump on Thursday vowed to begin testing US nuclear weapons “on an equal basis” with Russia and China, ...

The test comes days after President Vladimir V. Putin announced the previous trial of another Russian nuclear weapon.

President Donald Trump appears to have ordered a return to nuclear testing after decades of uneasy but effective treaties ...