In late 966 or early 967, he sent the "patrikios" Kalokyros, a citizen of Cherson, as his ambassador to Sviatoslav, ruler of the Rus' with whom the Byzantines had long maintained close relations and were bound by treaty.
In late 966 or early 967, he dispatched the "patrikios" Kalokyros, a citizen of Cherson, as his ambassador to Sviatoslav, ruler of the Rus'. The Rus' were a people with whom the Byzantines had long maintained close relations and were bound by treaty.