Professor Gary Sheffield offers insightful analysis of the end of WWI. One of Britain’s foremost experts on WWI returns to discuss America’s participation in the Great War, the conclusion of hostilities, the Armistice of 11 November 1918 and the Versailles Treaty. Mark draws from Professor Sheffield’s new release of "The First World War," published in association with the Imperial War Museum, as well as his earlier work, "Forgotten Victory."