I'm probably lacking in imagination, but I don't understand why it has to be complicated. Under the right circumstances, it would just entail to NOT act upon intelligence about an impending coup attempt? Just check that you have support from other key parts of the military, then wait.

To engineer something like that, yes, that sounds very complicated. But to see an opportunity rise and grab it, does not sound impossible. It's plausible, I'd say. I look forward to watch the documentary in 30 years... ?

Leaders democratically elected or otherwise are people seeking power, in general the democratic leaders do not cross a line, but Erdogan has proven he is not your "normal" elected leader.

Nobody benefits from a failed coup like Erdogan, he now has the license to make Military in his image and the last pillar of secularism in Turkey is Kaput!

The coup failed, at least in part, because either the plotters and their allies were deluded about getting support from the population, or they had simply failed to prepare the ground by promoting secularism in the population. The other side of the coin is that the population sees secularism as the hallmark of a military that is co opted by liaisons with NATO and foreign intelligence agencies.

I see this latter failure as a general failure throughout the way the West interacts with Islamic nations. We've allowed secularism to become a tarnished brand, associated with military strong-men, instead of promoting it as the way to rights and education for women and freedom from religious totalitarianism.