" Volodymyr’s choice would have a profound impact on his realm and on the history of eastern Europe as a whole. Instead of continuing warfare with Byzantium, the new Rus’ polity was entering into an alliance with the only surviving part and continuator of the Roman Empire and thereby opening itself to the political and cultural influences of the Mediterranean world. It would prove fateful that Volodymyr not only brought Rus’ into the Christian world but also made it part of Eastern Christianity. Many of the consequences are as important today as they were at the turn of the second millennium. "

― Serhii Plokhy , The Gates of Europe: A History of Ukraine