At its height, Nagar encompassed most of the southwestern half of the Khabur Basin, and was a diplomatic and political equal of the Eblaite and Mariote states. The kingdom included at least 17 subordinate cities, such as Hazna, and most importantly Nabada, which was a city-state annexed by Nagar, and served as a provincial capital. Nagar was involved in the wide diplomatic network of Ebla, and the relations between the two kingdoms involved both confrontations and alliances. A text from Ebla mention a victory of Ebla's king (perhaps Irkab-Damu) over Nagar. However, a few years later, a treaty was concluded, and the relations progressed toward a dynastic marriage between princess Tagrish-Damu of Ebla, and prince Ultum-Huhu, Nagar's monarch's son.