Declassified documents show that in the 1960's, the American Joint Chiefs of Staff signed off on a plan to blow up AMERICAN airplanes (using an elaborate plan involving the switching of airplanes), and also to commit terrorist acts on American soil, and then to blame it on the Cubans in order to justify an invasion of Cuba.
Operation Northwoods was series of proposals for actions against the Cuban government, that originated within the Department of Defense (DoD) and the Joint Chiefs of Staff (JCS) of the United States government in 1962. The proposals called for the Central Intelligence Agency (CIA) or other US government operatives to commit acts of terrorism against American civilians and military targets, blaming it on the Cuban government, and using it to justify a war against Cuba. The proposals were rejected by the Kennedy administration.
At the time of the proposal, Cuba had recently become communist under Fidel Castro. The operation proposed creating public support for a war against Cuba by blaming it for terrorist acts that would actually be perpetrated by the US Government (so called "false flag operations"). To this end, Operation Northwoods proposals recommended hijackings and bombings followed by the introduction of phony evidence that would implicate the Cuban government. It stated:
The desired resultant from the execution of this plan would be to place the United States in the apparent position of suffering defensible grievances from a rash and irresponsible government of Cuba and to develop an international image of a Cuban threat to peace in the Western Hemisphere.
Several other proposals were included within Operation Northwoods, including real or simulated actions against various US military and civilian targets. The operation recommended developing a "Communist Cuban terror campaign in the Miami area, in other Florida cities and even in Washington".
The plan was drafted by the Joint Chiefs of Staff, signed by Chairman Lyman Lemnitzer and sent to the Secretary of Defense. Although part of the US government's anti-communist Cuban Project, Operation Northwoods was never officially accepted; it was authorized by the Joint Chiefs of Staff, but then rejected by President John F. Kennedy. According to currently released documentation, none of the operations became active under the auspices of the Operation Northwoods proposals.