Operation Gladio

Operation Gladio was the codename for clandestine "stay-behind" operations of armed resistance that were organized by the Western Union (WU; founded in 1948), and subsequently by NATO (formed in 1949), and by the CIA (established in 1947), in collaboration with several European intelligence agencies during the Cold War. Although Gladio specifically refers to the Italian branch of the NATO stay-behind organizations, Operation Gladio is used as an informal name for all of them. Stay-behind operations were prepared in many NATO member countries, and in some neutral countries.

According to several Western European researchers, the operation involved the use of assassination, psychological warfare, and false flag operations to delegitimize left-wing parties in Western European countries and to support anti-communist militias and right-wing terrorism who tortured communists and assassinated them, such as Mozambican resistance leader Eduardo Mondlane in 1969. The United States Department of State rejected the view that they supported terrorists and maintains that the operation served only to resist a potential invasion of Western European countries by the Soviet Union.