Since the 1990s, the United States has used science to verify its nuclear weapons are working properly. NPR was granted a rare look at how they do it.

Iran's Supreme Leader Ali Khamenei said Friday that negotiating with the United States will not solve Iran's problems, describing such negotiations as ...

Failing to achieve market share for America’s nuclear power politics likely will decrease its influence over the evolving ...

DUBAI, United Arab Emirates (AP) — Iran’s supreme leader said Friday that negotiations with America “are not intelligent, ...

By deploying Russian nuclear weapons to Belarusian territory, self-proclaimed President of Belarus Alexander Lukashenko is putting his country at risk of retaliatory attack if Moscow presses the ...

Iran's supreme leader says negotiations with America "are not intelligent, wise or honorable," after U.S. President Donald ...

Iran's Supreme Leader Ayatollah Ali Khamenei told air force officers in Teheran on Friday that nuclear talks with the U.S.

Luke Farritor, 23, is now listed in the Department of Energy's staff directory as an "information engineer," E & E News ...

Iran’s Supreme Leader rejected holding talks with Donald Trump, saying that experience shows it is “not rational, intelligent ...

Vladimir Zelensky said the West should give Ukraine nuclear weapons and deploy its troops on the country’s territory if it is not yet ready to grant NATO membership to Kiev ...