Department of State, Report to Kissinger, SECRET, "The Third World War and South America," August 3, 1976.

http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB416/docs/0000A02E.pdf

 Department of State, Report to Kissinger, SECRET, "The Third World War and South America," August 3, 1976.
This report, based on CIA intelligence, was written by Assistant Secretary of State for Latin America, Harry Shlaudeman and presented to Secretary of State Henry Kissinger in August 1976. The document summarizes the coordination of Southern Cone security forces:
"[T]hey are joining forces to eradicate 'subversion,' a word which increasingly translates into non-violent dissent from the left and center left. The security forces of the Southern Cone now coordinate intelligence activities closely; operate in the territory of one another's countries in pursuit of 'subversives'; have established Operation Condor to find and kill terrorists…in their own countries and in Europe. Brazil is cooperating short of murder operations."