NATO’s 1964 “Cosmic Top Secret” UFO Study Exposed | Robert Dean’s Explosive Testimony

In a 1993 conference presentation, retired Command Sergeant Major Robert Dean revealed a 1964 NATO "cosmic top secret" study called "The Assessment," which concluded that Earth has been studied by multiple extraterrestrial civilizations for thousands of years. The study reportedly analyzed crash retrievals, biological remains, and reverse-engineering, finding no major military threat due to the aliens' vastly superior technology. Dean also claimed that some extraterrestrial species look completely human, allowing them to blend into society undetected. He argues that while recent government UFO file releases are superficial, this NATO document proves that military intelligence has long understood the reality of the phenomenon.