With monumental fairness and balance, The Conquerors shows how Roosevelt privately refused desperate pleas to speak out directly against the Holocaust, to save Jewish refugees, and to explore the possible bombing of Auschwitz to stop the killing. The book also shows FDR's fierce will to ensure that Germany would never threaten the world again. Near the end of World War II, he abruptly endorsed the secret plan of his friend, Treasury Secretary Henry Morgenthau, to reduce the Germans to a primitive existence—despite Churchill's fear that crushing postwar Germany would let the Soviets conquer the continent. The book finally shows how, after FDR's death, President Truman rebelled against Roosevelt's tough approach and adopted the Marshall Plan and other more conciliatory policies that culminated in today's democratic, united Europe.

As Presidents Roosevelt and Truman led the United States in World War II in Europe, they dealt with the question of what kind of government should be imposed on Nazi Germany to ensure that Germany could never again drag the world into war. The Conquerors tells the story with much intimate detail and color of how FDR and Truman privately struggled in their own minds and with titanic allies like Winston Churchill and Josef Stalin, through summits and secret messages, to answer that question.