Why is Turkey so convinced the US was behind the coup attempt and why are they zeroing in on General Campbell?

Thanks to Don for the link!

via Yenisafak

A former U.S. commander of the International Security Assistance Force (ISAF), a NATO-led security mission in Afghanistan, was the organizer of the July 15 military coup attempt in Turkey, sources said.
General John F. Campbell was one of the top figures who organized and managed the soldiers behind the failed coup attempt in Turkey, sources close to ongoing legal process of pro-coup detainees said.
Campbell also managed more than $2 billion money transactions via UBA Bank in Nigeria by using CIA links to distribute among the pro-coup military personnel in Turkey.
The ongoing investigation unveiled that Campbell had paid at least two secret visits to Turkey since May, until the day of the coup attempt.
The coup plot that was foiled by the comprehensive effort of Turkish Nation, including its citizens, politicians, media and police forces, was organized by the Fethullah Terrorist Organization (FETO) led-by so-called cleric Fethullah Gülen who has been living in self-exile in America for several years.
American Intelligence, Military and other institutions are accused of supporting the FETO leader Gülen and his gangs for the military coup.

This has gone beyond being an accusation and an annoyance.  Turkey is behaving as if they have solid evidence that the US was behind the coup attempt.  But why?  Additionally they're zeroing in on General Campbell with laser beams but have yet to provide any evidence.

So what's really going on here?

One thing is certain.  The Turkish govt is acting as if there isn't any doubt and that has major league implications not only for US policy in the Middle East but for NATO as a whole.

We've seen half hearted efforts by Chairman of JCS to patch things up and a quick visit by the SecState.

Whatever is going it needs to be worked and worked hard.  The utterly unthinkable?  What if the Turks are right?  Could we actually have been crazy enough to plan a coup of a NATO member?  I say impossible.  No one could be that stupid.  Not even the Pentagon, White House, State or CIA.