Harvard historian Plokhy (Unmaking Imperial Russia
) enhances his stature as a scholar of modern Russia in this convincing revisionist analysis of the February 1945 Yalta conference. Plokhy makes sophisticated use of Soviet sources to make a case that Yalta was anything but the diplomatic defeat for the West so often depicted in cold war literature. He describes Yalta in the context of a clash between different approaches to international relations. FDR was a liberal internationalist. Churchill and Stalin saw the world in terms of power and interests. And with the Red Army only 50 miles from Berlin, “Stalin held the trump cards.” Plokhy's detailed and highly engrossing narrative of the negotiations shows that the West did reasonably well. Roosevelt's agenda was global. He secured Stalin's commitment to join the war against Japan and participate in the U.N. Churchill, focused on Europe, preserved British interests in the Mediterranean. Stalin achieved recognition of the U.S.S.R.'s great-power status and a sphere of influence in Eastern Europe. The Yalta agreement was not the first conflict of the cold war but just a step toward a cold war that emerged only after three more years of failed negotiations. Maps. (Feb.)