reports of that relationship fraying. that might be because they have completely different objectives. isis wants to establish the islamic caliphate, al douri's group wanted to re-establish the sunni/baathist regime that iraq had under saddam hussein. so completely different goals and aims and quite possibly after isis was able to take over so much territory, that's when we started to see any sort of whatever that alliance was, really start to show some strain. >> all right. atika, good explanation, thanks very much. atika shubert reporting. >> we will dig deeper in both these stories. the bombing near the u.s. consulate in erbil and the death of one of iraq's most wanted men. stay with us.