Fethullah Gülen, the islamic preacher and businessman who resides in Pennsylvania, is today regarded as the number one enemy of Tayyip Erdogan's AKP government which has repeatedly asked for his extradition to Turkey.
However, it is known that Erdogan and Gülen were once close allies. What is less known is that both men had participated, in one or another way, in the CIA-designed anti-communist campaign in Turkey during the Cold War years.