Admiral Alexander Vasilyevich Kolchak was a Russian navy officer and polar explorer who led the White movement in the Russian Civil War. When he assumed the title of Supreme Ruler of Russia in 1918, Kolchak headed a military dictatorship, which ruled over the territory of the former Russian Empire controlled by the Whites. He was a proponent of Russian nationalism and militarism, and opposed democracy as a principle which he believed was tied to pacifism, internationalism, and socialism.