Khanate of Sibir
After a year of Tatar attacks, Yermak prepared for the conquest of the Khanate of Sibir and a campaign to take the Khanate's capital city, Qashliq. The Cossacks conquered the city on 26 October 1582, sending Kuchum into retreat. Despite the conquest, Kuchum regrouped his remaining forces and formed a new army, launching a surprise attack on 6 August 1584, killing Yermak. There were a series of battles over Qashliq, and it passed between Tatar and Cossack control, before the city was finally abandoned in 1588. Kuchum was eventually defeated by the Cossacks in 1598 at the Battle of Urmin near the River Ob, ending the Khanate of Sibir. The Russians had established control over the western Siberia region.