Abstract
The research is briefed in studying the political and military condition of Kirkuk district during the period between 1500 – 911 B.C. when the conflict between the middle Assyrian state and the middle Babylonian ,State was happening on the ownership of the district, and as a result of this conflict the tow sides agreed on dividing the area between them. The boundaries between both sides was departed according to apolitical agreement. The Assyrian state, during the middle Assyrian period, was strong enough to talk to the Egyptian pharaohs. Directly as a (brother) which means that the both sides were socially equal (the Assyrian king and the Egyptian pharaoh), That’s why the Kassite king was very angry, and sent a letter to the Egyptian pharaoh blaming him for reseving the Assyrian messengers. claiming that the Assyrians are originally his followers, But the Assyrians could – after Aššur- uballit I had come to throne in (1365 B.C) invade all Kirkuk district and invaded the eastern capital of the Mittanian Empire, which was in that time Nuzi (tell terkalan about 25 KM south west Kirkuk). After Aššur- uballit I his son, Tukulti – Ninurta I came to throne (1244 B.C) and could conquer all the middle Mesopotamia and reached the city of Dur-Kuri-Kalzu the kassite capital which its remains is known today as (Aqar-Guff). The struggle between the two powers, the Assyrian and the Kassite remained continuous and ended with dividing the area between them equally, beginning with S ašily (which might be Tašela in the Mansoryia mountain in Diyala). After that peace was stabled in the area, the agreement where crowned by political marriages which the historical experiences proved its danger, because the end of them was disastrous