Russia against three empires

By the time of the appearance of the Old Russian state in the first third of the 9th century, the territories adjacent to it were under the control of three powerful geopolitical rivals: the decayed empire of Karl the Great, Byzantine Empire and the Khazar Kaganate. In addition to serious military and economic pressure, the young Slavic state also felt a serious spiritual and religious influence emanating from the Christian West and East, as well as from Khazaria. According to the author of the book proposed, especially Khazaria, with its closest connections with the trading empire of the wandering merchants - Radhonites, posed a certain threat to Kyiv and its lands.
On the complex interweaving of international politics and ideological confrontations in the vastness of Eastern Europe, the next book of the series tells