During the intense nuclear testing programs of the Cold War, the United States conducted an extraordinary series of ...

WEST PALM BEACH, Fla. — New tests of the U.S. nuclear weapons system ordered up by President Donald Trump will not include nuclear explosions, Energy Secretary Chris Wright said Sunday. It was the ...

President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. “We’ve halted many years ago, but with others doing testing I think it’s ...

In 1954, scientists and military personnel gathered at Bikini Atoll to witness Castle Bravo, the first test in a major series of thermonuclear experiments conducted during the early Cold War. The ...

SEOUL, South Korea (AP) — North Korea said it conducted a “higher level” nuclear test explosion on Friday that will allow it to finally build an array of stronger, smaller and lighter nuclear weapons.

What You Need to Know: Russia’s recent changes to its nuclear doctrine and tests of the Oreshnik intermediate-range ballistic missile are raising concerns about a potential escalation in the Ukraine ...

VIENNA (AP) — The head of the U.N. nuclear test ban treaty organization says arch-enemies Iran and Israel are “the closest” of the eight holdout nations to ratifying the treaty and assuring the world ...

As Iran’s nuclear program advances, the critical question of whether Tehran would need to conduct nuclear tests to ensure its weapons are effective looms over the consciousness of the international ...

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. “As of today, the ...

This transcript was prepared by a transcription service. This version may not be in its final form and may be updated. Speaker 1: From the opinion pages of the Wall Street Journal, this is Potomac ...

President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. "We've halted many years ago, but with others doing testing I think it's ...