The Ottomans, seeking to consolidate their control of the region, engaged him in a costly war which eventually led to the dissolution of his Emirate.[26] After the fall of his main rival, Bedir Khan Beg of Bohtan sought to extend his dominion by annexing the Assyrian regions in Hakkari.[27] He took advantage of a rift between the patriarch Shimun XVII Abraham and Nur Allah, the Emir of Hakkari. Bedir Khan allied with Nur Allah and attacked the Assyrians of Hakkari in the summer of 1843, massacring them and taking those who survived as slaves.