Signed at the Ninth International Conference of American States, Bogotá, March 30-May 2, 1948 : as Amended by the Protocol of Buenos Aires, Signed at the Third Special Inter-American Conference, February 15-27, 1967 and Inter-American Treaty of Reciprocal Assistance, Signed at the Inter-American Conference for the Maintenance of Continental Peace and Security, Rio de Janeiro, August 15-September 2, 1947