The term 'White Russian' is a reference to the political movement of the same name that existed in Russia during the early 20th century. The White Russians were a group of anti-Bolshevik forces who opposed the Bolshevik Revolution of 1917 and the subsequent Soviet Union. The White Russians were led by Tsar Nicholas II, the last Tsar of Russia, and were supported by the Allied Powers during World War I. The term 'Tsarist' is used to refer to the rule of the Tsars in Russia, and it has seven letters.