Adad-nirari I (
1307 BC –
1275 BC or
1295 BC -
1263 BC) was a
king of
Assyria. He is the earliest Assyrian king whose annals survive in any detail.Adad-nirari I was a king of substantial military consequence in the development of the Assyrian kingdom. In his reign, Assyria began to play a large role in the history of Mesopotamia.He conquered northern
Mesopotamia and subdued the
Mitanni empire. His surviving records indicate that he defeated King
Nazimaruttash of
Kassites, at the battle of Kar-Ishtar. He also defeated Mitanni kings
Shattuara I and his son
Wasashatta. This victory led his to incorporate all Mesopotamia under his rule. In wars against
Hittites, he again lost large parts of Mesopotamia. In the east, he successfully defended his kingdom against the mountain tribes.
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