مونكو خان
Möngke Khan from 1251 began a renewed expansion of the Mongol Empire, and when caliph al-Mustasim refused to submit to the Mongols, Baghdad was besieged and captured by Hulagu Khan in 1258. With the destruction of the Abbasid Caliphate, Hulagu had an open route to Syria and moved against the other Muslim powers in the region.