Tukulti-Ninurta I, King of Assyria

http://en.wikipedia.org/wiki/Tukulti-Ninurta_I

He succeeded Shalmaneser I, his father, as king and won a major victory against the Hittites at the Battle of Nihriya in the first half of his reign. Tukulti-Ninurta I later defeated Kashtiliash IV, the Kassite king and captured the rival city of Babylon to ensure full Assyrian supremacy over Mesopotamia. Kashtiliash IV was captured and deported to Assyria. After a rebellion in Babylon, he plundered Babylon's temples, and later began to build a new city, Kar-Tukulti-Ninurta. However, his sons rebelled against him and besieged him in his new city. During the siege, he was murdered. One of them, Ashur-nadin-apli, would succeed him on the throne.

After his death, the Assyrian Empire fell into decline. The Tukulti-Ninurta Epic describes the war between Tukulti-Ninurta I and Kashtiliash IV.[1] http://en.wikipedia.org/wiki/Tukulti-Ninurta_I