The book tells about the complex and contradictory interstate, mainly political, relations between the Kazan and Moscow states during the XV-XVI centuries. Based on the rich material of numerous sources, the author gives a reliable picture of the formation and strengthening of the Kazan Khanate. Further, the constantly increasing tension in relations, rivalry, diplomatic games, local conflicts, the vicissitudes of Kazan's struggle to maintain its independence are covered in detail. The narrative ends with a tragic event - the capture of Kazan, the loss of its independence by the Kazan Khanate.