Byzantine diplomacy

Byzantine diplomacy concerns the principles, methods, mechanisms, ideals, and techniques that the Byzantine Empire espoused and used in order to negotiate with other states and to promote the goals of its foreign policy. Dimitri Obolensky asserts that the preservation of civilization in Eastern Europe was due to the skill and resourcefulness of Byzantine diplomacy, which remains one of Byzantium's lasting contributions to the history of Europe and the Middle East.

After the fall of Rome, the key challenge to the Byzantine Empire was to maintain a set of relations between itself and its sundry neighbors, including the Persians, Georgians, Iberians, the Germanic peoples, the Bulgars, the Slavs, the Armenians, the Huns, the Avars, the Franks, the Lombards, and the Arabs, that embodied and so maintained its imperial status. All these neighbors lacked a key resource that Byzantium had taken over from Rome, namely a formalized legal structure. When they set about forging formal political institutions, they were dependent on the empire. Whereas classical writers are fond of making a sharp distinction between peace and war, for the Byzantines diplomacy was a form of war by other means. Anticipating Niccolò Machiavelli and Carl von Clausewitz, Byzantine historian John Kinnamos writes, "Since many and various matters lead toward one end, victory, it is a matter of indifference which one uses to reach it." With a regular army of 120,000-140,000 men after the losses of the seventh century, the empire's security depended on activist diplomacy.

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