Barak took support from Ulugh Beg, the Timurid khan, and in 1422 he dethroned Kepek, Ulugh Muhammad as well as Dawlat Berdi, khans of the Golden Horde. And Barak Khan reoccupied Sighnak from the Timurids. However, he was defeated in 1427 by Ulugh Muhammad and was promptly assassinated by Jochi's descendant, Mohammed, who claimed the steppe between the Ural and Syr Darya rivers for his dynasty.
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