When Iran’s covert nuclear program came to international attention over two decades ago, Tehran insisted that its intentions were peaceful and that it had no plans to develop nuclear weapons.

JD Vance claimed that Iran may build suicide bomb vests containing "small nuclear weapons", which could kill thousands.

Although President Trump has claimed Iran was weeks away from developing a nuclear weapon, much more work was needed for the country to do so ...

Add Yahoo as a preferred source to see more of our stories on Google. The U.S. began "Operation Epic Fury" on Feb. 28 when it launched strikes against Iran, bombing over 1,000 targets at the start.

Nuclear weapons tests are among the most violent events humans can trigger, and that violence leaves fingerprints in the Earth, sea, air, and even in orbit. The physics of shock waves, sound, and ...

In 1961, the Soviet Union detonated the most powerful nuclear weapon ever built. Known as Tsar Bomba, the explosion was over 3,800 times stronger than Hiroshima. It was never designed for battlefield ...