Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

In comments during a two-hour CNBC special on his life and legacy, Warren Buffett compared the potential of AI technology to ...

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.

Regional fears of a U.S. attack on Iran have eased after President Donald Trump said Tehran had assured him that protesters ...

Tensions are growing in east Asia. The threat of a Chinese attack on Taiwan persists and, in recent weeks, North Korea has been testing its long-range missile capabilities. Russia’s reorientation of ...

A Princeton University simulation shows how a single low-yield nuclear weapon could rapidly spiral into a full-scale ...

Key Points and Summary - The U.S. military has suffered dozens of “Broken Arrow” nuclear weapons accidents—events involving lost weapons, accidental releases, or other serious mishaps. -Most were ...

During the Cold War the U.S. considered putting nuclear weapons on balloons and letting them float into enemy territory for a strike.

Russia said its strike was retaliation for a claimed drone attack that President Donald Trump said never happened. Kyiv’s ...

The report, titled "Nuclear Ambitions of Japan's Right-Wing Forces: A Serious Threat to World Peace", urged nations to ...

In August, a group of American Catholic Church leaders—including Cardinal Blase Cupich of Chicago, Cardinal Robert McElroy of Washington, DC, Archbishop Paul Etienne of Seattle, and me, the Archbishop ...

For the first time since the end of the Cold War, nuclear arsenals are growing, and the weapons themselves are becoming more ...