渤海國과 契丹의 교섭관계 재검토

Abstract

This thesis studied relationship between Balhae(渤海) and Khitan(契丹) that had had special reason that Taizu(太祖) of Khitan had said Balhae a enemy for generations.Balhae and Khitan were neighbors and had same customs. In September 720, Balhae did not bow to the Tang Dynasty’s demands that were to subdue Xi(奚) and Khitan. Even in 732, Balhae supported from Khitan attacked Deungju(登州). In this manner, Balhae and Khitan had cooperated since foundation of Balhae. In the 9th century, the relationship between Balhae and Khitan by means of New History of Tang Dynasty(新唐書) seems to be antagonistic each other because Buyeobu (夫餘府) lied at ancient Buyeo(夫餘) and troops stationed there to defend Khitan. However, Khitan became to change to the offensive actively against Balhae from the 10th century when Yelü Abaoji(耶律阿保機) appeared as a powerful leader. In December 925, Yelü Abaoji said“ though what is called one of two things was finished already, but we could not revenge Balhae. Under these circumstances how can we live in comfort?”, called to arms and destroyed Balhae in January 926. Taize of Koryo(高麗) considered both countries kept peace before the advent of Yelü Abaoji about the relationship between Balhae and Khitan at this time and after Yelü Abaoji, Khitan destroyed Balhae irrationally. As above, Balhae had been intimate with Khitan before foundation. This relationship continued until the 8th century. Though between two countries had strained relations, in the 9th century, it seems that they kept friendship before the advent of Yelü Abaoji that is the Taize of Khitan. It seems that“ Balhae were the enemy of Khitan for generatioins”it was justication of Yelü Abaoji to conquest Balhae was not real. It was only diplomatic skill to justify subjugating Balhae and really both countries were not enemies for generations.