A US official focusing on arms control on Monday provided what he called new, declassified details of a Chinese underground ...

Now, eight months later, the president is once again weighing military strikes against Iran with the administration providing ...

US claims China carried out a 2020 underground nuclear test at Lop Nur, urging Beijing and Moscow to engage in disarmament after New START expired.

Ahead of new talks expected to take place this week, U.S. envoy Steve Witkoff said President Donald Trump was "curious" as to why Tehran has not capitulated in the face of Washington's massive ...

A U.S. official revealed details of an alleged Chinese nuclear test, urging global cooperation for disarmament while highlighting concerns over China's expanding nuclear capabilities.

Iran’s supreme leader is facing one of the most consequential decisions of his more than 30 years in power this week: strike a deal with President Trump to severely limit the country’s ...

Trump claimed the nuclear program of Iran was "obliterated." Now, 8 months later it's "a week away" from having nuclear bombs ...

From Trinity’s fallout to a New Mexico school underground, “Nuclear Family” traces how the bomb reshaped one family and a ...

Here’s what to know about the “bombogenesis” of the storm battering the East Coast—and how the snowfall could be historic.

Saudi Arabia may soon develop uranium enrichment capabilities within its borders as part of a proposed nuclear deal with the ...