Timeline of the Assyrian Empire in Ashur began deteriorating, Tukulti-Ninurta built a new capital city; Kar-Tukulti-Ninurta. He stretched the Assyrian Empire further south than before, conquering Dilmun, a "pre-Arab" civilisation of the Arabian Peninsula that encompassed modern Bahrain, Kuwait, Qatar and the coastal regions of the Eastern Province of Saudi Arabia. However, Tukulti-Ninurta's sons rebelled and besieged the ageing king in his capital. He was murdered and then succeeded by Ashur-nadin-apli (1206–1203 BC) who left the running of his empire to Assyrian regional governors such as Adad-bēl-gabbe. Another unstable period for Assyria followed, it was riven by periods of internal strife and the new king
Akkadian Empire Akkadian Empire The Akkadian Empire () was the first ancient empire of Mesopotamia, centered in the city of Akkad and its surrounding region, also called Akkad in ancient Mesopotamia in the Bible. The empire united Akkadian and Sumerian speakers under one rule. The Akkadian Empire exercised influence across Mesopotamia, the Levant, and Anatolia, sending military expeditions as far south as Dilmun and Magan (modern Bahrain and Oman) in the Arabian Peninsula. During the 3rd millennium BC, there developed a very intimate cultural symbiosis between the Sumerians and the Akkadians, which included widespread bilingualism. Akkadian gradually replaced Sumerian as a spoken