[mc32]

And apparently they were friends and supported each other before they became rivals and Gulen, a Sufist, was evaluated as a threat by Erdogan, so Gulen high tailed out of Turkey --given Erdogan's tendency to want to concentrate power, it looks like it was the wise choice.

[mustaflex]

first of all he didn't leave Turkey under Erdogan's rule, he left much earlier because secular forces knew what he was and the circle was closing on him. He Left Turkey in 1999.