In the long period between Agum-kakrime[47] and Kara-indash, the names of three Kassite rulers only have recovered. From a kudurru,[48] or legal document, of the reign of Kadashman-Enlil I. we learn of two earlier Kassite kings, Kadashman-Kharbe and his son Kurigalzu,[49] and it is possible that a son of the latter, Meli-Shipak, succeeded his father on the throne.[50] We know nothing of Babylon's relations to Assyria at this time, and our first glimpse of their long struggle for supremacy is in the reign of Kara-indash, who is recorded to have made a friendly agreement with Ashur-rim-nishêshu with regard to their common boundary.[51] That such an agreement should have been drawn up is in itself evidence of friction, and it is not surprising that a generation or so later Burna-Buriash, the correspondent of Amen-hetep III., should have found it necessary to conclude a similar treaty with Puzur-Ashur, the contemporary Assyrian king.[52] We may regard these agreements as marking the beginning of the first phase in Babylon's subsequent dealings with Assyria, which closes with friendly agreements of a like character at the time of the Fourth Babylonian dynasty. During the intervening period of some three centuries friendly relations were constantly interrupted by armed conflicts, which generally resulted in a rectification of the frontier to Babylon's disadvantage. On only one occasion was she victorious in battle, and twice during the period the capital itself was taken. But Assyria was not yet strong enough to dominate the southern kingdom for any length of time, and at the close of the period Babylon may still be regarded as in occupation of a great part of her former territory, but with sorely diminished prestige.