In the period following the death of the last Mongol Ilkhan ruler Abū Saʿīd in 736/1335, the region east of the Mamluk Sultanate, from the Euphrates to the Oxus, was thrown into political upheaval. The Ilkhanate had been ruled by a dynastic line descended from Hülegü Khan, which, although witness to occasional succession disputes, had continued to provide undisputed leadership in the region sin...