In 969, Emperor Otto I entered into an alliance with Byzantine Emperor John I Tzimiskes in which both Eastern and Western Empires would jointly-govern southern Italy.
Pada tahun 969, Kaisar Otto I beraliansi dengan Kaisar Bizantium, Ioannes I Tzimiskes di mana Kekaisaran Timur dan Barat bersama-sama memimpin Italia selatan.