 This lengthy campaign strained the resources of Hatti, and left the capital in a state of near-anarchy.Mursili was assassinated shortly after his return home, and the Hittite Kingdom was plunged into chaos.The Hurrians (under the control of an Indo-Aryan Mitanni ruling class), a people living in the mountainous region along the upper Tigris and Euphrates rivers in modern south east Turkey, took advantage of the situation to seize Aleppo and the surrounding areas for themselves, as well as the coastal region of Adaniya, renaming it Kizzuwatna (later Cilicia).