In 1971, a Soviet ship encountered a strange brown cloud near Vozrozhdeniya Island in the Aral Sea, which led to a smallpox outbreak the USSR desperately tried to conceal.

This documentary investigates Aralsk-7, a secret Soviet bioweapons facility where scientists developed smallpox, plague, and anthrax in violation of global treaties. The story includes declassified files, whistleblower testimony from defector Ken Alibek, and CIA archives that shed light on one of the Cold War’s most dangerous secrets.

Direct video link: https://youtu.be/U3j5SaUL92E