One of the most consequential years in world history, highlighted by the Communist revolution in Russia and the United States’ entry into the World War, has come to an end. In December 1917 the Bolsheviks, having driven the Provisional Government from power, occupy Russian Army headquarters and murder the Army’s former commander-in-chief. An armistice is declared on the Eastern Front and negotiations begin for a permanent peace treaty between the new Russian government and the Central Powers. The announced goal of the talks is a peace on the basis of no annexations and a withdrawal of occupying forces, but the difficulty of achieving that goal in practice becomes apparent when the two sides present their proposals. In Palestine, a British Army commanded by General Edmund Allenby occupies Jerusalem. On the Western Front the British stall German counterattacks at Cambrai and dig into defensive positions for the winter; Italian forces, aided by British reinforcements, turn back the Austrians on the Asiago Plateau. Ships collide in Halifax harbor, causing a fire and a massive explosion that kills thousands. An American destroyer is torpedoed and sunk by a German submarine. The United States declares war on Austria-Hungary. Colonel House returns from Paris where he has been meeting with the Allies. President Wilson, using his war powers, takes control of the nation’s railroads. The House of Representatives joins the Senate in approving a prohibition amendment to the Constitution.