["Biography & Autobiography \/ Political","History \/ Military \/ Vietnam War","Military\/Vietnam War","Political Science \/ International Relations \/ General","United States\/20th Century","Economists;United States;Biography.","Political consultants;United States;Biography.","Vietnam War, 1961-1975;Diplomatic history.","Biography & Autobiography \/ Political","Economists;United States;Biography.","History \/ Military \/ Vietnam War","Military\/Vietnam War","Political Science \/ International Relations \/ General","Political consultants;United States;Biography.","United States\/20th Century","Vietnam War, 1961-1975;Diplomatic history."]