Diffidence and ambition : the intellectual sources of U.S. foreign policy / Carlo Maria Santoro ; [translated by Andrew Ellis and Leslie Gunn]. Perla e l'ostrica. English Santoro, Carlo Maria, 1935- Council on Foreign Relations History. World War, 1939-1945 Diplomatic history. World War, 1939-1945 United States. E806 .S28613 1991 327.73 20 SAD Rev. and updated translation of: La perla e l'ostrica. Includes bibliographical references (p. 250-302) and index. Boulder : Westview Press, 1992. 1992. 1992 Text xv, 316 p. : eng eng ita New approaches to peace and security United States Foreign relations 1933-1945. United States.