In the West Ögedei's general Chormaqan destroyed Jalal ad-Din Mingburnu, the last shah of the Khwarizmian Empire. The small kingdoms in southern Persia voluntarily accepted Mongol supremacy. In East Asia, there were a number of Mongolian campaigns into Goryeo Korea, but Ögedei's attempt to annex the Korean Peninsula met with little success. Gojong, the king of Goryeo, surrendered but later revolted and massacred Mongol "darughachis" (overseers); he then moved his imperial court from Gaeseong to Ganghwa Island.