4 0 0 0 欧州安全保障協力機構(OSCE)の危機低減措置と安全保障対話 : 制度・実態とアジア太平洋地域への適用可能性試論・資料 = OSCE, a study on risk reduction and security dialogues : framework and practice in the organization for security and co-operation in Europe and its applicability to Asia and the Pacific