The fact is that both the West and the Gulf Arabs are doing more. They continue to finance the jihadi rebels in Syria (all promises of vetting by the U.S. are comical), and they continue to see the Assad government as an obstacle to peace in the region... The history of their policies also suggests that Western and Gulf Arab intervention leads inexorably to the creation of police states (as in Egypt) and terrorist emirates.

Go here for a brief but thorough breakdown of the geopolitical situation leading up to the ISIS state.

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