An aerial view of the Golden Generation Worship and Retreat Center in rural Saylorsburg, Pennsylvania, is seen in this picture taken July 9, 2013. The Private compound is where Fethullah Gulen, an influential islamist cleric has lived for more than a decade. A rare defence from a secretive Islamic movement of its role in Turkish political life has exposed a rift with Prime Minister Tayyip Erdogan that could weaken one of modern Turkey’s most powerful leaders. The spell of Gulen, a 72-year-old U.S.-based Islamic preacher with a global network of schools, whose supporters say they number in the millions, has long loomed large over Turkey’s constitutionally-secular state. To match Analysis TURKEY-GULEN/ REUTERS/Staff (UNITED STATES – Tags: POLITICS RELIGION)