Every war is a tragedy, a failure to resolve sharp differences of ideology and interest or to stop evil men before they can impose their will on others. The First World War was one of the most tragic wars in history: Although none of its major protagonists expected or wanted it to occur, it initiated thirty years of bloodletting on an unprecedented scale and planted the seeds for civil conflicts that continue to rage today. Witness the fate of the Sykes-Picot Treaty, the secret pact drawn up in 1916 by diplomats from Britain and France that mashed together Shiites, Sunnis, and Kurds in a new nation called Iraq.
Historians will debate forever whether the Great War could have been prevented. But for the United States, it was indisputably a war of choice. Germany neither threatened a trans-Atlantic attack, nor had the ability to mount one. And while Woodrow Wilson and the government's propaganda agency, the Committee on Public Information, portrayed the Kaiser's regime as a cruel autocracy, it could not raise an army without the approval of the Reichstag, an elected legislature.
