Choresm-Schahs
However, despite aiding the Mongols against Jin, in 1217 when Genghis Khan requested help for his Central Asian campaigns, Western Xia refused to commit troops, and as a warning the Mongols besieged the capital before withdrawing. In 1219, Genghis Khan launched his campaign against the Khwarazmian dynasty in Central Asia, and requested military aid from Western Xia. However, the emperor and his military commander Asha refused to take part in the campaign, stating that if Genghis had too few troops to attack Khwarazm, then he had no claim to supreme power. Infuriated, Genghis swore vengeance and left to invade Khwarazm, while Western Xia attempted alliances with the Jin and Song dynasties against the Mongols.