Political map of South & Southwest Asia 03 March 1918 (Treaty of Brest-Litovsk): Transcaucasia's armistice with the Ottomans (Armistice of Erzincan) broke down in February 1918, by which point the Bolsheviks had largely secured their control of Russia and declared it a Soviet Republic (Russian Socialist Federative Soviet Republic). However the new Soviet state was still too weak to fight the Central Powers and in March was forced to the harsh Treaty of Brest-Litovsk, dramatically redrawing its border not only in the west but with the Ottoman Empire at the expense of Transcaucasia.