popular name for the Latin American policy pursued by the administration of the U.S. president Franklin D. Roosevelt (Roosevelt, Franklin D.). Suggested by the president's commitment “to the policy of the good neighbor” (first inaugural address, March 4, 1933), the approach marked a departure from traditional American interventionism. Through the diplomacy of Secretary of State Cordell Hull, the United States repudiated privileges abhorrent to Latin (Latin America, history of) Americans. The United States renounced its right to unilaterally intervene in the internal affairs of other nations at the Montevideo Conference (December 1933); the Platt Amendment, which sanctioned U.S. intervention in Cuba, was abrogated (1934); and the U.S. Marines were withdrawn from Haiti (August 1934).

The policy's success was measured in part by the rapidity with which most Latin American states rallied to the Allies during World War II. After the war, however, U.S. anticommunist policies in Europe and Asia led to renewed distrust in the Americas and the gradual lapse of the Good Neighbor Policy.