Though the country’s nuclear arsenal has undergone no explosive testing for decades, federal experts say it can reliably ...

NBC News’ Andrea Mitchell joins “Here’s the Scoop” co-host Yasmin Vossoughian to explain the difference between a weapons ...

President Donald Trump said on Monday that Iran was close to building a nuclear bomb before the U.S. attacked it during the ...

US President Donald Trump's request to the Pentagon for resuming nuclear weapons testing has sparked global apprehension, ...

From Japan to Norway, probing by Russian war jets and drones is provoking a harder line by America’s allies. Mr. Brooke has ...

DUBAI, United Arab Emirates (AP) — President Donald Trump’s comments Thursday suggesting the United States will restart its ...

The W88, estimated to yield 455 kilotons of TNT explosives, is one of the most powerful nuclear warheads in the U.S. arsenal, and is carried on Trident II D5 submarine-launched ballistic missiles ...

But President Donald Trump ’s back-to-back announcements about nuclear testing and nuclear submarines on Oct. 29 during his ...

U.S. President Donald Trump ordered the U.S. military on Thursday to immediately resume testing nuclear weapons after a gap ...

President Donald Trump uncorked another startling social media post on Wednesday night, alerting the globe that he has ...

Russia delivered an ominous response Thursday after President Donald Trump unloaded a startling announcement that the United ...