Russia quits war
Brest, BelarusOn 15 December 1917, an armistice was signed between the Russian Soviet Federative Socialist Republic on the one side and the Austro-Hungarian Empire, the Kingdom of Bulgaria, the German Empire and the Ottoman Empire—the Central Powers—on the other. The armistice took effect two days later, on 17 December. By this agreement Russia de facto exited World War I, although fighting would briefly resume before the Treaty of Brest-Litovsk was signed on 3 March 1918, and Russia made peace.