The sheer magnitude of the Holocaust has commanded our attention for the past sixty years. The extent of atrocities, however, has overshadowed the calculus Nazis used to justify their deeds.

According to German wartime media, it was German citizens who were targeted for extinction by a vast international conspiracy. Leading the assault was an insidious, belligerent Jewish clique, so crafty and powerful that it managed to manipulate the actions of Roosevelt, Churchill, and Stalin. Hitler portrayed the Holocaust as a defensive act, a necessary move to destroy the Jews before they...