President Hassan Rouhani and one his advisors initially suggested Tehran could cooperate with Washington on countering IS militants. But senior military, political and religious leaders, including Rouhani, have increasingly criticized Western responses to the crisis and blamed U.S. policies for the emergence of IS. “We are strongly against the interference of the US and others in Iraq’s internal affairs and do not approve of it, because we believe that the Iraqi government, nation and religious authority are capable of ending this sedition and will end it, God willing" Khamenei words.