Conflict between Kara Koyunlu (Black Sheep Turkomen) under the leadership of Jahan Shah and Aq Qoyunlu (White Sheep Turkomen) under the leadership of Uzun Hasan had taken a decisive turn in the 15th century. During Jahan Shah's reign the Kara Koyunlu’s territory reached its largest extent, including huge swaths of land in Anatolia, most of present-day Iraq, central Iran, and even eventually Kerman. He and his predecessors before him were vassals of the Timurids of Samarkand.