"Khazars (Yarmuk)"@en . "The Khazars, an offshoot of the Turkish Khanate which, at its height, dominated the Russian Steppe area, were a short-lived but powerful state and were firm trading partners with the Byzantines. There eventual destruction by the Ummayad Caliphate, proved to be a great blow to there allies in Constantinople - and left the Transoxianian area open to Seljuk advance."@en . "The Khazars, an offshoot of the Turkish Khanate which, at its height, dominated the Russian Steppe area, were a short-lived but powerful state and were firm trading partners with the Byzantines. There eventual destruction by the Ummayad Caliphate, proved to be a great blow to there allies in Constantinople - and left the Transoxianian area open to Seljuk advance."@en . . .