The CIA is a long-time supporter of Islamic extremism and continues to be the main sponsor of Jihadist terrorist groups like ISIS that have targeted innocent people in Western and Muslim countries.
An excerpt from, "BFP Exclusive- William Engdahl on Operation Gladio, Fethullah Gülen & One World Government" BFP, February 10, 2015:
This is not merely my view but that of very knowledgeable Turkish analysts and even the former Turkish MIT senior figure, Osman Nuri Gundes, former FBI Turkish-American translator Sibel Edmonds, and others have documented his deep links to very senior CIA people such as Graham Fuller. When Gülen fled Turkey to avoid prosecution for treason in 1998, he chose not to go to any of perhaps a dozen Islamic countries which could have offered him asylum. He chose instead the United States. He did so with the help of the CIA. The US State Department tried to block a special “preference visa as an alien of extraordinary ability in the field of education” permanent visa status for Gülen, arguing he was basically a fraud with a fifth grade education and no special Islam scholar. Over the objections of the FBI, of the US State Department and of the US Department of Homeland Security, three former CIA operatives intervened and managed to secure a Green Card and permanent US residency for Gülen.
Intervention by three current or “former” CIA people--George Fidas, who was US Ambassador to Turkey and an ex CIA Deputy Director; Morton Abramowitz who was described as at least “informal” CIA, and CIA career man who spent time in Turkey, Graham E. Fuller. They got Gülen asylum in Saylorsburg, Pennsylvania. That certainly suggests a strong tie at the very least.