Political map of South & Southwest Asia 07 November 1917 (Russian Revolution): Unfortunately for the Allies (Allied of World War I), the new Russian Republic which had arisen after the February Revolution was weak and unstable. On November 7 (October 25 in the old-style calendar), Vladimir Lenin's revolutionary Bolshevik party seized power in Petrograd, the capital, and overthrew the government (October Revolution). Further armed insurrections took place across Russia.