Turkey has been helping Middle East terrorists?
It is something have suspected for some time. The Erdogan government has been at best a lousy ally. It was unhelpful in the Iraq war and has been mostly unhelpful in the fight with ISIL. When it has said it was fighting ISIL, it has been more likely using that as an excuse to attack the Kurds who were actually fighting ISIL. It has also been accused of trading in black market oil stolen by ISIL.
Turkey IS supporting terrorists and Islamist groups in Syria according to leaked German government report
A leaked confidential report from the German government has accused the Turkish government of supporting terrorist groups across the Middle East.