Who are they Khazars? How could a small people create a great power? Do historians exaggerate the role of Kievan Rus and Prince Svyatoslav in the defeat of the Khazar Khaganate? What is the role of Judaism in the history and fate of the Khazars? Professor B. B. Irmukhanov answers these and other questions in his book. At the same time, this work is the first scientific attempt to study the problem of the Khazars in the context of the history of the Kazakh people.