Erdogan's recent fraudulent referendum ended what little democracy was left in Turkey.  Held at a time when Turkey has more journalists in jail than any other country in the world.  Held during a "state of emergency" during which over 150,000 have been detained, fired, and.or jailed. 

There is now no significant separation of powers in Turkey.  

Erdogan calls the Germans "Nazis" and refuses German parliamentarians access to German NATO troops stationed at Incirlik.

There is no compelling reason to maintain the nuclear weapons at Incirlik (IF they are still there).