KRISTENSEN: Countries like to keep nuclear weapons data secret. That’s the tendency. It varies from country to country a lot. In the United States, there’s a lot of information available.

The threat is real: Our nuclear weapons are much more powerful than Oppenheimer's atomic bomb Nine countries now have nuclear weapons. Modern arsenals include nukes 80 times more powerful compared ...

Those who brought war into our country deserve all the curses and maledictions a people can pour out.” — W.T. Sherman. After ...

Deadlier weapons, more nations, autocrats in charge, disinformation and collapsing arms control — the risk of nuclear catastrophe is back.

The devastation nuclear weapons can cause is widely known. Although many have been tested, only two have been detonated but their impact was enough to bring about an almost immediate end to World ...

Modern nuclear weapons, like the one that the United States and other countries have, are in the hundreds. And the biggest bomb in the US arsenal today is more than 80 times as powerful as the ...

Russia has dispersed its vast collection of nuclear weapons - including ICBMs, submarines, and bombers ... Russia’s modern ...

Russia's potential deployment of space-based nuclear weapons would threaten 'our entire modern way of life' in America and Europe, top US generals have warned. 'It's a completely indiscriminate ...

Modern nuclear weapons are different. They use both a primary stage, like a plutonium pit, to create a fission reaction, and a secondary stage that creates a fusion reaction.

The president’s most important job, as the sole steward of America’s nuclear arsenal, is to prevent nuclear war. And a ...

The strength and intensity of modern nuclear weapons are far greater than the ones used during World War II, with the potential to cause "global fallout" because of the "sheer quantity of ...

Russia's placement of a nuclear weapon in space would pose a risk to the 'entire modern way of life,' a U.S. general says, but it's only one of many risks.