There is no extant evidence of conflict between Elam and Babylon during his reign. The ruling families had been joined through intermarriage in the past, but the countries had resorted to war to settle their differences under the reigns of Kurigalzu I and possibly Nazi-Maruttaš. However, the sequence of kings of Elam during this period is very confused, with several names suspiciously appearing over again some in shuffled sequences, such as Napirisha-Untash and Untash-Napirisha, making it hard to make sense of the chronology. After Kaštiliašu's overthrow, however, Kidin-Hutran III, the king of Elam, certainly led two successive incursions into Babylonia, which have been explained as either indicative of his loyalty to the fallen Kassite dynasty or alternatively raiding with impunity to exploit the weakness of the over-extended Assyrians.
