Sviatoslav I of Kiev
Sviatoslav I Igorevich (943 – 26 March 972), also spelled Svyatoslav, was a Grand Prince of Kiev. His decade-long reign over the Kievan Rus’ was marked by rapid expansion into the Volga River valley, the Pontic steppe, and the Balkans. He died in ambush, and his failure to establish a stable succession led to a fratricidal feud among his three...