| Mongol conquest of Western Xia | |||||||||
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| Part of the Mongol conquest of China | |||||||||
 Mongol conquest of Western Xia and other regimes of China | |||||||||
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| Belligerents | |||||||||
| Mongol Empire | |||||||||
| Commanders and leaders | |||||||||
Between 1205 and 1227, the Mongol Empire embarked on a series of military campaigns that ultimately led to the destruction of the Tangut-led Western Xia dynasty in northwestern China. Hoping to both to plunder and acquire vassalage, Genghis Khan commanded some initial raids against the Western Xia before launching a full-scale invasion in 1209. This was the first major invasion conducted by Genghis, and his first major incursion into China.
The Mongols began a siege of the Western Xia capital Yinchuan that lasted nearly a year, during which the Mongols tried to divert a river to flood the city, but accidentally flooded their own camp instead. Ultimately, Emperor Xiangzong of Western Xia surrendered to the Mongols in January 1210, marking the beginning of a decade of Western Xia vassalage under the Mongols, where they provided support for the Mongol conquest of the Jin dynasty. However, when Genghis invaded the Islamic Khwarazmian Empire in 1219, the Western Xia attempted to break away from Mongol vassalage and form alliances with the Jin and Song dynasties. Angered by the betrayal of the Western Xia, Genghis Khan began a second campaign against them, sending a punitive expedition into Western Xia in 1225. Genghis intended to annihilate the entire Western Xia culture: he methodically destroyed their cities and countryside, and began besieging Yinchuan in 1227. In December, near the end of the siege, Genghis Khan died of unknown causes, which has been presented by some accounts as being the result of wounds he had suffered against the Western Xia. Following Genghis's death, Yinchuan fell to the Mongols, and most of its population was massacred.