How do you understand the rise of ISIS in the historical context of the “clash of civilizations”?

How do you understand the rise of ISIS in the historical context of the “clash of civilizations”?.

How do you understand the rise of ISIS in the historical context of the “clash of civilizations”? Does the ongoing challenge presented by the so-called Islamic State bolster or erode your impression of the Huntington thesis? In your answer please provide at least three contrasting examples from the past seven centuries. You may use examples from Hourani, Armstrong, the PBS “Empire of Faith”.