A cuneiform tablet found in 1957 written in both the Hittite and the Akkadian language provides details of six years of his reign. In it, he claims to have extended the Hittite domain to the sea, and in the second year, to have subdued Alalakh and other cities in Syria. In the third year, he campaigned against Arzawa in western Anatolia, then returned to Syria to spend the next three years retaking his former conquests from the Hurrians, who had occupied them in his absence.