Abāqā (d. 681/1282) was the eldest son of Hülegü Khān and succeeded him in 663/1265, being the second ruler of the Mongol Īlkhānid dynasty in Iran and the surrounding countries. His name is derived from the Mongol abaγa ("paternal uncle") and is usually rendered "Abaghā" or "Abāqā" in Arabic and Persian. In his long reign, Abāqā was responsible for the ongoing institutionalisation of the Īlkhānate, its relative internal stability and prosperity, and an active, even aggressive policy vis-à-vis other Mongol states and the Mamlūks to the