sentences:  Abu'l-Khayr's army pulled back to the steppe, where they defeated two opposing khans near Astrakhan.In 1435–1436 the Uzbek armies attacked Khwarezm again, and several years later they raided Astrakhan.Starting in 1446 Abu'l-Khayr and his forces invaded the Syr Darya region, eventually wresting some lands from Timurid control.