In just 18 months, ISIS captured a swath of territory in Syria and Iraq the size of Great Britain. The U.S.-led 70-nation coalition fought the group for five years. But no one stopped to ask how did ISIS take the territory in the first place? Journalist Roy Gutman, who won a Pulitzer Prize for his pathbreaking reports on the “Ethnic Cleansing” in Bosnia, tells how in Flying Blind, the Untold Story of America’s Debacle in Syria. ISIS had a patron: the same Syrian regime that funneled thousands of Al Qaida fighters into Iraq after the U.S. invasion.