In 1955, the US Navy detonated a nuclear warhead deep beneath the Pacific Ocean during Operation Wigwam. The test focused on ...

A subsurface atomic test near Yucca Flats, Nev., in March 1955. (U.S. Atomic Energy Commission via AP) In what would be a major shift in a decades-old American policy against global nuclear ...

In the mid-1990s, Laura Holgate, then a senior Defense Department official, was in Moscow leading a delegation to discuss ways the United States could help the Russians secure plutonium from ...

Donald Trump plans to turn the UK into a “potential nuclear launchpad” and put American nuclear missiles on British soil for ...

Supporters describe the treaty as a historic achievement but the nuclear-armed states have dismissed the ban as unrealistic, arguing it will have no impact on reducing the global stockpile of 15,000 ...

This year’s contributors to the Bulletin ’s “Voices of Tomorrow” section, which features essays and opinion pieces by rising experts, focused heavily on the threats posed by nuclear weapons. We also ...

President Donald Trump's comments Thursday suggesting the United States will restart its testing of nuclear weapons upends decades of American policy in regards to the bomb, but come as Washington's ...

How to build a nuke and what you can do about it. June 28, 2010— -- Nuclear weapons have been making a lot of noise lately. Whether it's a new START agreement, a United Nations summit or a ...

President Donald Trump on Saturday night announced American warplanes dropped bombs on three nuclear sites in Iran, with the U.S. officially entering the war more than a week after Israel’s initial ...

President Donald Trump said Iran was "weeks away" from having a nuclear bomb. Iran was close to having bomb-grade uranium, but experts predicted it could have taken anywhere from months to two years ...