Political map of South & Southwest Asia 18 May 1920 (Soviet Victory in Central Asia): In 1919 the Soviets defeated the rival White movement in Siberia, allowing them to reconnect with their isolated allies in the Turkestan ASR. The following year they moved south across Central Asia and around the Caspian Sea into Azerbaijan. By May they were in northern Persia, where they helped establish a Soviet Republic in Gilan (Persian Socialist Soviet Republic).