Graham E. Fuller is a former vice chairman of the National Intelligence Council at the CIA, in charge of long-range strategic forecasting. He is an adjunct professor of history at Simon Fraser University and the author of numerous books about the Middle East.

What if Islam never existed? To some, it's a comforting thought: no clash of civilizations, no holy wars, no terrorists. Here, political scientist and expert on the Muslim world Graham E. Fuller guides us through history, geopolitics, and religion to investigate whether or not Islam is indeed the cause of some of today's most emotional and important international crises, taking us from the birth of Islam to the fall of Rome to the rise and collapse of the Ottoman Empire and to the present day.