Mitanni (/mɪˈtæni/; Hittite cuneiform KUR Mi-ta-an-ni; Mittani Mi-it-ta-ni), also called Hanigalbat (Hanigalbat, Khanigalbat cuneiform Ḫa-ni-gal-bat) in Assyrian or Naharin in Egyptian texts, was a Hurrian-speaking state in northern Syria and southeast Anatolia from ca. 1500 BC–1300 BC. Ruled by an Indo-Aryan ruling class governing a predominantly Hurrian population, Mitanni came to be a regional power after the Hittite destruction of Amorite Babylon and a series of ineffectual Assyrian kings created a power vacuum in Mesopotamia. At the beginning of its history, Mitanni's major rival was Egypt under the Thutmosids. However, with the ascent of the Hittite empire, Mitanni and Egypt made an alliance to protect their mutual interests from the threat of Hittite domination. At the height of its power, during the 14th century BC, Mitanni had outposts centered on its capital, Washukanni, whose location has been determined by archaeologists to be on the headwaters of the Khabur River. Eventually, Mitanni succumbed to Hittite and later Assyrian attacks, and was reduced to the status of a province of the Middle Assyrian Empire. The Mitanni dynasty ruled over the northern Euphrates-Tigris region between c. 1475 and c. 1275 BCE. While the Mitanni kings were Indo-Iranians, they used the language of the local people which was at that time a non Indo-Iranian language, Hurrian.