1981: The Creation of the Anglo-American Alliance, 1937–1941: a Study in Competitive Co-operation (1981) University of North Carolina Press ISBN0-8078-1507-1 (Awarded the Bernath Prize by the Society for Historians of American Foreign Relations, 1982)
1988: An Ocean Apart: the Relationship between Britain and America in the 20th Century – co-author David Dimbleby. Hodder & Stoughton ISBN0-340-40666-6 (Linked to BBC/PBS TV series.)
1991: Britannia Overruled: British Policy and World Power in the 20th Century. Longman ISBN0-582-43725-3
1994: Allies at War: the Soviet, American and British Experience 1939–1945 (Franklin and Eleanor Roosevelt Institute Series on Diplomatic and Economic History). (Co-edited with Warren F. Kimball and A. O. Chubarian). Palgrave Macmillan ISBN0-312-10259-3
1994: The Origins of the Cold War in Europe: International Perspectives (editor). Yale University Press ISBN0-300-05892-6
1995: Rich Relations: the American Occupation of Britain, 1942–1945. Random House ISBN0-517-16871-5 (Awarded the US Society for Military History's Distinguished Book Award, 1996)
2000: One World Divisible: a Global History since 1945.. Allen Lane ISBN0-7139-9461-4
2001: From Munich to Pearl Harbor: Roosevelt's America and the Origins of the Second World War. Ivan R. Dee ISBN1-56663-389-3
2004: In Command of History: Churchill Fighting and Writing the Second World War. Random House ISBN0-679-45743-7 (Awarded the Wolfson History Prize, 2004)
2005: Christ's: a Cambridge College Over Five Centuries (editor). Macmillan ISBN0-333-98988-0
2006: From World War to Cold War: Churchill, Roosevelt, and the International History of the 1940s. Oxford University Press ISBN0-19-928411-3
2007: Summits: Six Meetings That Shaped the Twentieth Century. Allen Lane ISBN0-7139-9917-9
2008: FDR's World: War, Peace, and Legacies. (Co-edited with David B. Woolner and Warren F. Kimball) Palgrave Macmillan ISBN0-230-60938-4