Ashur, in Mesopotamian religion, city god of Ashur and national god of Assyria. In the beginning he was perhaps only a local deity of the city that shared his name. From about 1800 bc onward, however, there appear to have been strong tendencies to identify him with the Sumerian Enlil (Akkadian: Bel), while under the Assyrian king Sargon II (reigned 721–705 bc), there were tendencies to identify Ashur with Anshar, the father of An (Akkadian: Anu) in the creation myth. Under Sargon’s successor Sennacherib, deliberate and thorough attempts were made to transfer to Ashur the primeval achievements of Marduk, as well as the whole ritual of the New Year festival of Babylon—attempts that clearly have their background in the political struggle going on at that time between Babylonia and Assyria. As a consequence, the image of Ashur seems to lack all real distinctiveness and contains little that is not implied in his position as the city god of a vigorous and warlike city that became the capital of an empire. The Assyrians believed that he granted rule over Assyria and supported Assyrian arms against enemies; detailed written reports from the Assyrian kings about their campaigns were even submitted to him. He appears a mere personification of the interests of Assyria as a political entity, with little character of his own.