On 15 December 1448, Jonah became Metropolitan of Kiev and All Rus' without the agreement of the Ecumenical Patriarchate of Constantinople, which made the Metropolis of Kiev and all Rus' "de facto" independent. In 1467, Metropolitan Gregory the Bulgarian, which had been appointed by the Pope as the Uniate Metropolitan of Kiev and all Rus', severed the Union with the Catholic Church, and recognized the jurisdiction of the Eastern Orthodox Patriarch Dionysius I of Constantinople. Dionysius demanded that all the Eastern Orthodox hierarchs of Muscovy submit to Gregory, but Moscow peremptorily refused. On the same year, Grand Prince Ivan III of Moscow declared a complete rupture of relations with the Patriarchate of Constantinople.