A declassified Cold War-era file from the CIA has gone viral over its coverage of a supposed clash between Soviet soldiers ...

According to the report, Soviet troops in Ukraine spotted a "low-flying spaceship in the shape of a saucer" during a training ...

The document, originally composed in the early 90s and only recently declassified, reads more like the premise of a science fiction thriller than an official intelligence assessment. But its ...

Trump released formerly classified files on the JFK assassination. But what makes information classified and how does it become declassified?

Tom Cruise and Joe Rogan's interest in extraterrestrial activity will be bolstered by declassified CIA report about alien ...

A declassified CIA file from the Cold War era recounting an alleged alien encounter that turned 23 Soviet soldiers into stone ...

News Reporter The CIA investigated whether Adolf Hitler was living in South America under an assumed identity a decade after the fall of Nazi Germany, according to declassified documents.