The main success of Byzantine missionary activities and Byzantine foreign policy in general was the conversion of Rus’. It turns out that the Greeks did not pay a slightest attention to this event which enlarged the domain of Orthodoxy twofold! In analyzing missionary practices of Greeks in Rus’ the author draws on some sources, rarely used by Byzatine scholars — the Old Russian Vita of Leontius, bishop of Rostov, the answers of John, the Greek metropolitan of Rus’ in the 11
thcentury, to the questions of the inferior missionaries. John tries to be tolerant — but he cannot. He insists on stringent observation of all Byzantine rites («as in the State of Romans, i. e. Byzantines»). The only concession he makes concerns severe Russian frosts: he lets priests put fur clothes under their liturgical garments.The author also deals with a question of relations between Byzantium and the world of Islam. Arabic captives were being baptized by force rather than by preaching. Very few cases when Greek monks were visiting Caliphate and converting Moslems are collected from Byzantine hagiography. Promises of Byzantine emperors to spread Christianity to the Arabic world look more like crusading rather than missionary plans.