It actually started in 2013 albeit slowly, so anything between 2013-2016 although speculative fits the narrative. >why?
Why erdoğan was pro fethullah gülen but he eventually said fuck you to him behind the screens or gülen thought erdoğan fulfilled his role and time to get rid of him we cant know this for sure.
What we know is gülenists were recording everything and tracking everything down. For example when I won the university before I shared the news with my friends and family, an unknown phone number called me and was spoken with in a matter that unique for gülenists (trust me if you know any other Turk he would confirm) and told me I won x university in y city would I like to stay in their super cheap "family oriented" (islamist for clueless) dormitory. This was happening for everyone.
So the recording and tracking is goes beyond soviet levels. Anyway, in 2013 they leaked several soundtracks how corrupt AKP is and how an members of the islamist party mocks islam in a way makes islamaphobe parties in europe look moderate.
This kept leaking for 1 week, the news channel that used to be both pro akp and pro gülenists split off. Certain news channels took the akp side and certain ones took gülens side. Eventually erdo won, all those leaks declared "montage" and any oppossition that mentions those leaks was declared "taking orders from america".
After this event erdo said, gülen is bad but his followers is not, tried to show his "good side" but of course most didnt fall for it. Gülenist soldiers were still in present in military also.
Since erdoğan was acknowledging threat from gülenists and their military he had to strike deal with eurasianist anti PKK military. (any military is actually anti PKK but there were leaks in highschool and university exams in massive scale, so gülenist people could enter military schools which are the most prestigious things in this country, such retards couldnt enter before)
Of course military wanted to fuck PKK up in return take blind eye to erdos massive corruption and violation just as free media™ of the west did. So after these events massive erdo bad news started to occur.
Even during gezi parkı protests that was an genuine attempt to fight against islamic oppression people did not see such high scale of erdo bad news. Because hint hint, erdo was good with PKK and tensions with gülen was happening only behinds the screens if happening at all.
I dont use the term islamic opression liberally as fearmongers in the west. The guy said he would create laws against male&female students staying together. He also said "they are atheists, they are terrorists!" literally.
If you have any more question you can ask. I might have deviate too much.>ISIS
Erdo supports ISIS thing was mostly russian propoganda, you dont see it pumped much nowadays. Ironically russia started but they are the ones not mentioning it.
One of the reasons behind this claim president davutoğlu (a puppet of erdo) they are just angry mad lads (about ISIS) and severely undertimated them. Very similar statement was also made by president Obama and it's not hard to find. But for some reason USA needs to throw us from NATO for this, what kind of logic is that is beyond me.
Don't get me wrong, these people are corrupt, nasty if they actually let ISIS do its thing I wouldnt suprise, I would expect everything from them. But main reason was this sentence and russian propoganda (cant blame them) When you are an islamist party and make dumb fuck comments it is hard to oppose you know, they had it coming.