Naimans in the context of "Qara Khitai"

Genghis Khan (born Temüjin; c. 1162 – August 1227), also known as Chinggis Khan, was the founder and first khan of the Mongol Empire. After spending most of his life uniting the Mongol tribes, he launched a series of military campaigns, conquering large parts of China and Central Asia.

Born between 1155 and 1167 and given the name Temüjin, he was the eldest child of Yesugei, a Mongol chieftain of the Borjigin clan, and his wife Hö'elün. When Temüjin was eight, his father died and his family was abandoned by its tribe. Reduced to near-poverty, Temüjin killed his older half-brother to secure his familial position. His charismatic personality helped to attract his first followers and to form alliances with two prominent steppe leaders named Jamukha and Toghrul; they worked together to retrieve Temüjin's newlywed wife Börte, who had been kidnapped by raiders. As his reputation grew, his relationship with Jamukha deteriorated into open warfare. Temüjin was badly defeated in c. 1187, and may have spent the following years as a subject of the Jin dynasty; upon reemerging in 1196, he swiftly began gaining power. Toghrul came to view Temüjin as a threat and launched a surprise attack on him in 1203. Temüjin regrouped and overpowered Toghrul; after defeating the Naiman tribe and executing Jamukha, he was left as the sole ruler on the Mongolian steppe.

Mongol campaigns in Central Asia occurred after the unification of the Mongol and Turkic tribes on the Mongolian Plateau in 1206. Smaller military operations of the Mongol Empire in Central Asia included the destruction of surviving Merkit and Naimans (which involved forays into Cumania) and the conquest of Qara Khitai. These were followed by a major campaign against Khwarazm. Expansion into Central Asia began in 1209 as Genghis Khan sent an expedition to pursue rivals who had fled to the region and threatened his new empire. The Uyghur kingdom Qocho and leaders of the Karluks submitted voluntarily to the Mongol Empire and married into the imperial family. By 1218 the Mongols controlled all of Xinjiang and by 1221 all the territories of the former Khwarazmian Empire. In 1236, the Mongols defeated the eastern portions of Cumania and swept into Eastern Europe.

The Mongol Empire conquered the Qara Khitai (Western Liao Empire) in the year 1218 AD. Prior to the invasion, war with the Khwarazmian Empire and the usurpation of power by the Naiman prince Kuchlug had weakened the Qara Khitai. When Kuchlug besieged Almaliq, a city belonging to the Karluks, vassals of the Mongol Empire, and killed their ruler Ozar, who was a grandson-in-law to Genghis Khan, Genghis Khan dispatched a force under command of Jebe and Barchuk to pursue Kuchlug. After his force of over 30,000 was defeated by Jebe at the Khitan capital Balasagun, Kuchlug faced rebellions over his unpopular rule, forcing him to flee to modern Afghanistan, where he was captured by hunters in 1218. The hunters turned Kuchlug over to the Mongols who beheaded him. Upon defeating the Qara Khitai, the Mongols now had a direct border with the Khwarazmian Empire, which they would soon invade in 1219.

Zubu (Chinese: 朮不姑 or 阻卜 or 阻䪁, also referred to as Dada or Tatars) was the common name of Khamag Mongol, Khereid, Naiman and Tatar tribes from the 10th to 12th centuries. Little is known in detail about this group. The name "Zübü" might means “left” in Khitan language, or might be derived from Xiongnu's ruling tribe Xubu.

Kuchlug (also spelled Küchlüg, Küçlüg, Güčülüg, Quqluq) (Mongolian: Хүчлүг; Chinese: 屈出律; d. 1218) was a member of the Naiman tribe who became the last emperor of the Western Liao dynasty (Qara Khitai). The Naimans were defeated by Genghis Khan and he fled westward to the Qara Khitai, where he became an advisor to his future father-in-law Yelü Zhilugu. He later rebelled, usurped the throne and took control of the empire, putting an end to the rule of the House of Yelü. He was killed in 1218 by the Mongols and the domain of the Qara Khitai was absorbed into the Mongol Empire.

While his predecessor Yelü Zhilugu was the last Qara Khitai emperor from the Yelü clan, Kuchlug is sometimes regarded as the final ruler of the Western Liao realm as he retained the dynastic title of "Great Liao" upon his ascension to the throne.

Kitbuqa Noyan (died 1260), also spelled Kitbogha, Kitboga, or Ketbugha, was an Eastern Christian of the Naimans, a group that was subservient to the Mongol Empire. He was a lieutenant and confidant of the Mongol Ilkhan Hulagu, assisting him in his conquests in the Middle East including the sack of Baghdad in 1258. When Hulagu took the bulk of his forces back with him to attend a ceremony in Mongolia, Kitbuqa was left in control of Syria, and was responsible for further Mongol raids southwards towards the Mamluk Sultanate based in Cairo. He was killed in 1260 at the Battle of Ain Jalut, which was the first major loss of the Mongolian advances and halted their expansion into Arabia and Europe.