Following the Russian Revolution of October 1917, the area came under the control of a temporary administrative committee created by the three main ethnic groups in the Caucasus. Though it attempted to negotiate a truce with the Ottoman Empire, Ottoman forces launched an eastward offensive and took Igdir on May 20, 1918. They occupied it until the signing of the Armistice of Mudros in November 1918. The Republic of Armenia then assumed control over Igdir. The Armenian population suffered heavily during the grueling winter of 1918–19, as famine, disease and the cold killed many. In May 1919, its status was elevated to that of a city.