After his son and successor was assassinated, another of this man's sons took the throne and instituted persecutions of Buddhists before being overthrown by the Buddhist governor of Khorasan, Arghun. After capturing Lurestan, this man seized the fortress of Alamut without a 
After his son and successor was assassinated, another of this man's sons took the throne and instituted persecutions of Buddhists before being overthrown by the Buddhist governor of Khorasan, Arghun. After capturing Lurestan, this man seized the fortress of Alamut without a struggle and went on to execute al-Musta'sim, who was allegedly rolled up in a rug and trampled to death. In the course of those exploits, he founded a dynasty whose later rulers would include Mahmud Ghazan, the Il-Khanid dynasty. His general Kitbuqa was killed following his army's defeat by the Mameluks at Ain Jalut. FTP, name this brother of Mangu who in 1258 sacked Baghdad, a war-mongering grandson of Genghis Khan.
After his son and successor was assassinated, another of this man's sons took the throne and instituted persecutions of Buddhists before being overthrown by the Buddhist governor of Khorasan, Arghun.