Over some years it would seem that Turkey has been a somewhat on-off, and lukewarm ally to both NATO and the US.
It’s human rights record both historically and to the present day are pretty abysmal. The enthusiasm with which a substantial portion of the Turkish population took part in the Armenian genocide was pretty sobering as is the present reluctance of modern Turkey to deal with it’s recent past in this particular regard.
It’s rather too warm and cosy relationship with daesh in the early stages of that dystopian organisations rise to power was definitely concerning.
It’s slide to more militant Islam is hardly reassuring and it's latest AA missile deal with Moscow positively alarming given it’s standing in the F-35 project. Alarm bell have been ringing over Turkey’s position in the F-35 program, and it is still very much a dilemma that is being scrutinised.
The EU negotiated a rather flawed and one sided refugee deal with Turkey, and Turkey has long pressed for the EU membership part, which, given it’s present human rights violations, still remains undecided.
Erdogan is a cunning bully and his ongoing consolidation power is in a manner which is all too reminiscent of some of the more unsavoury modern day dictators that have held power in recent times.
The US has long been at odds with Turkey/Erdogan’s policies and decisions, and a re-balancing of it’s position with certain NATO ‘allies’ is probably about time.