Abstract: | Ambassadors and embassies were numerous between Byzantium and its Muslim and Western Christian neighbours during the Middle Byzantine Period. This article seeks to demonstrate that these official envoys constituted major players involved in the transfer of political information between the courts considered. Ambassadors were those who travelled the most in the Mediterranean area during our period – at least between 700 and 900. Furthermore, as official envoys acting for sovereigns, they were carefully listened to by those sovereigns when they returned. Information coming from ambassadors is found in various sources and concerned military matters and foreign policy. But we also find precise data on domestic affairs and internal political information. Furthermore, news of usurpations and troubles in Byzantium may have constituted an important part of the information transferred beyond the Empire. Foreign ambassadors witnessed usurpations and palace revolutions. Their testimonies could have nourished the idea of a Byzantine government weakened by political instability and this theme became prominent during the twelfth century in some Western Christian courts. |