 Complete the following phrase:  The Mongols defeated the Alans after convincing the Kipchaks to desert them through pointing at their likeness in language and culture. Nonetheless, the Kipchaks were defeated next. Under khan Köten, Kipchaks fled to the Grand Principality of Kiev the Ruthenians, where the Kipchaks had several marriage relations, one of which was Kötens son-in-law Mstislav Mstislavich of Galicia. The Ruthenians and Kipchaks forged an alliance against the Mongols, and met at the Dnieper to locate them. After an eight-day pursuit, they met 