Allied intervention in the Russian Civil War Powers to withdraw from North Russia and Siberia in 1920, though Japanese forces occupied parts of Siberia until 1922 and the northern half of Sakhalin until 1925. In 1917, Russia was in a state of political strife, and public support for World War I and the Tsar was dwindling. The country was on the brink of revolution. The February Revolution changed the course of the war; under intense political pressure, the Tsar abdicated and the Russian Provisional Government was formed, led initially by Georgy Lvov and later by Alexander Kerensky. The Provisional Government pledged to continue fighting the Germans on
Background and causes of the Iranian Revolution government (often from outside Iran as they were suppressed within) for violating the Iranian constitution, political corruption, and the political oppression by the SAVAK (secret police). Shia cleric Ayatollah Ruhollah Khomeini, the leader of the Iranian revolution, first came to political prominence in 1963 when he led opposition to the Shah and his program of reforms known as the "White Revolution", which aimed to break up landholdings owned by some Shi’a clergy, allow women to vote and religious minorities to hold office, and grant women legal equality in marital issues. Khomeini declared that the Shah had "embarked on the destruction