ミルダース朝の外交政策 : 西暦十一世紀のアレッポを中心として

抄録

The Mirdasid dynasty ruled Aleppo and its region in northern Syria from 415 A.H./1025 A.D. to 473 A.H./1080 A.D.. The Mirdasid was a family of the Kilab tribe (Banu Kilab) which belonged to the northern Arab tribes. Banu Kilab, taking advantage of political disorder caused by the decline of the 'Abbasid's rule, had extended their influence into the Aleppo region. The Mirdasid principality was founded upon their strong military power. This paper aims to investigate the first period of the Mirdasid dynasty on the point of foreign policy and influence in the international relations. From the middle of the tenth century, the Aleppo region had been threatened by two powerful foreign states; the Fatimid Caliphate in Egypt and the Byzantine empire, both of which aimed to annex this region. Under such circumstances, Salih b. Mirdas, the first prince of the Mirdasid dynasty succeeded in gaining control of Aleppo city with support of a Syrian Arab alliance. To extend their power, the Mirdasides made use of the balance of power between these Great Powers and their limited ability to advance their territorial ambitions into Syria. The principal approach to their foreign policy was to negotiate with each of them, receive their recognition for possession of Aleppo, and then nominally establish an independent state under their patronage. However, before receiving their recognition, the Mirdasides had to engage in some battles with them. As a result, Thimal, the third prince, succeeded in obtaining recognition as the ruler of Aleppo from both of the Great Powers and stabilized the supremacy of the Mirdasid dynasty in the Aleppo region. However, the author has also ascertained that this success owed much to the internal affairs of the Fatimid caliphate and the Byzantine empire and changes that occured in the diplomatic relations between them. The author also examines concretely the position of the Mirdasid princes in international relations. As a result, she has found that their subordinate posture in the diplomatic negotiations did not mean a dependent character. It should be noted that recognition from foreign powers to be the governor of Aleppo was indispensable for the Mirdasid princes to achieve stability within their states ; and to receive such recognition was the principal purpose of their foreign policy.