Authors:

U.S. leaders should think that if they are aiding terrorist plans to eliminate Cuban leaders, they themselves will not be safe.

7 September 1963; quoted in Powers, The Man Who Kept the Secrets (1979). Some have seized on this warning as evidence of Cuban involvement in the assassination of President Kennedy.
U.S. leaders should think that if they are aiding terrorist plans to eliminate Cuban leaders, they themselves will not be safe.