In 1572, Russian tsar
Ivan the Terrible ordered the
Stroganovs to have a
Cossack ataman lead an expedition to force the natives into submission. The Stroganovs proposed an invasion of the Siberian Khanate, which Ivan agreed to and authorized the use of guns for the operation. In 1582, the Siberian Khanate was attacked by the Cossack ataman
Yermak, who
defeated Kuchum's forces and captured the capital
Qashliq. Kuchum retreated into the
steppes, and over the next few years regrouped his forces. He suddenly attacked Yermak on August 6, 1584, in the dead of night, and
killed Yermak and most of his army; regaining control of the now-ruined Qashliq. Kuchum attempted to unite the rival factions within the khanate's nobility but met resistance. After an unsuccessful attempt on his life by
Qarachi Sayet Khan (Säyet), Kuchum was forced to move his horde to the steppe south of the
Irtysh river. There he attempted to establish a new khanate, engaging in a war against the Russian governors. In 1590, Kuchum raided the Tatars around Tobolsk who were paying
yasak (tribute) to the Russians. In 1591, Koltsov caught Kuchum on the Ishym River and captured two of his wives and his son Abdul-Khair who was later given estates in Russia. In 1594, the fort at
Tara was built in part to control Kuchum who was in the area. In 1595, Kuchum's followers were raided on the upper Irtysh. In 1597, Kuchum asked for negotiations and the Tsar and Abdul-Khair wrote from Russia offering estates in Russia in return for surrender. Before September 1598,
Andrey Voyeykov caught a large group of his followers at a place called Ub Lake and later caught Kuchum on the Ob River. Kuchum fled, but the Russians killed two of his sons and captured five other sons, eight wives and eight daughters. A Muslim cleric was sent to negotiate. Kuchum replied, describing himself as deaf and blind and without subsistence and said that he had not submitted before and would not submit now. This was his last contact with the Russians. He is believed to have died in
Bukhara. In 1620, his son Ishim-khan married a daughter of
Kho Orluk who was then leading his people from Dzugharia to the Volga. ==Legacy==