The U.S.' top arms control official confirmed a Chinese nuclear test first suspected in 2020.

Scott Salesky, a researcher with the University of Oklahoma, has been awarded funding from the U.S. Department of Defense ...

Foreign adversaries are using fake jobs and consulting gigs to coax secrets from former U.S. officials. It’s had results, and the efforts don’t appear to be slowing.

Donald Trump reportedly approved access to secret UFO sites believed to provide proof of alien life and government cover-ups.

During the Cold War, the U.S. considered stationing nuclear missiles under the ice sheet in Greenland -- and never told ...

Thousands of pages of once-secret court documents show how federal officials and a Virginia court helped an American Marine ...

Former FBI co-deputy director Dan Bongino made a fiery return to podcasting Monday, defending the agency's review of the Jeffrey Epstein case, attacking his critics and conducting an interview with ...

Thousands of pages of once-secret court documents show how federal officials and a Virginia court helped an American Marine ...

NBC News has been publishing clips of President Donald Trump's pre-recorded Super Bowl interview, and each clip has brought ...

Ryan Routh, a man accused of hiding in the bushes of a Florida golf course with a semi-automatic rifle to try to assassinate ...