Book excerpt: The authoritative history of the pivotal conference between Allied leaders at the close of WWII, based on revealing firsthand accounts. Crimea, 1945. As the last battles of WWII were fought, US President Franklin Roosevelt, British Prime Minister Winston Churchill, and Soviet Premier Joseph Stalin—the so-called “Big Three” —met in the Crimean resort town of Yalta. Over eight days of bargaining, bombast, and intermittent bonhomie, they decided on the endgame of the war against Nazi Germany and how the defeated nation should be governed. They also worked out the constitution of the nascent United Nations; the price of Soviet entry into the war against Japan; the new borders of Poland; and spheres of influence across Eastern Europe, the Balkans, and Greece. Drawing on the lively accounts of those who were there—from the leaders and advisors such as Averell Harriman, Anthony Eden, and Andrei Gromyko, to Churchill’s secretary Marian Holmes and FDR’s daughter Anna Boettiger—Diana Preston has crafted a masterful chronicle of the conference that created the post-war world. Who “won” Yalta has been debated ever since. After Germany’s surrender, Churchill wrote to the new president, Harry Truman, of “an iron curtain” that was now “drawn upon [the Soviets’] front.” Knowing his troops controlled eastern Europe, Stalin’s judgment in April 1945 thus speaks volumes: “Whoever occupies a territory also imposes on it his own social system.”