For it was the war begun in 1914 and the Paris peace conference of 1919 that destroyed the German, Austro-Hungarian, and Russian empires and ushered onto the world stage Lenin, Stalin, Mussolini, and Hitler. And it was the war begun in September 1939 that led to the slaughter of the Jews and tens of millions of Christians, the devastation of Europe, Stalinization of half the continent, the fall of China to Maoist madness, and half a century of Cold War.