Several times during World War II, the Allies met to discuss the postwar treatment of Nazi leaders. Near the end of the war, President Franklin D. Roosevelt asked the War Department to devise a plan for bringing war criminals to justice. Treasury Secretary Henry Morgenthau suggested an "eye for an eye" approach: to shoot prominent Nazi leaders and banish others to far corners of the world. Secretary of War Henry Stimson endorsed a plan to try responsible Nazi leaders in court. The War Department plan labeled as war crimes the atrocities committed
The increasingly totalitarian regime that Hitler imposed on Germany allowed him to control the actions of the military. On November 7, 1938, a young Polish Jew named Herschel Grynszpan attacked and shot German diplomat Ernst vom Rath in the German embassy in Paris. Grynszpan's family, together with more than 12,000 Polish-born Jews, had been expelled by the Nazi government from Germany to Poland in the so-called " Polenaktion " on October 28, 1938. Joseph Goebbels ordered retaliation. On the night of November 9, the SS and SA conducted "the Night of Broken Glass" (" Kristallnacht "), in which at least 91 Jews were killed and a further 30,000 arrested and incarcerated in Nazi concentration camps . After the start of the war, and the conquest of numerous European countries, the Jewish population was put into ghettos , from which they were shipped to death camps where they were killed.