By spring 1918 the situation in Transcaucasia, which was left in ruins by the war, became almost uncontrollable. After the October Revolution of 1917 in Russia the Russian troops situated in Western Armenia left exposing the Caucasian front. The Turkish troops taking advantage of the created situation broke the Yerznka Armistice signed on October 5, 1917 and took the offensive on February 10, 1918.