He apologised to Jews for Catholic passivity during the Holocaust, prayed at a Syrian mosque and took steps to heal the rift between Catholics and adherents of the various easternOrthodoxchurches.
Their Church split from theEasternOrthodox and Roman Catholic Churches in 451AD because of a theological dispute over the nature of Christ but is now, on most issues, doctrinally similar to theEasternOrthodox Church.