Look how mild US references are to Turkish assistance to ISIS

"Money-changing and transfer businesses in southern Turkey are another particular concern because they are believed to be helping the militants launder money, the European official said.  In a reflection of the growing frustration with Turkey, the State Department pointedly mentioned the use of the city of Gaziantep as a transit point for fighters heading to the Islamic State when it recently announced a $5 million reward for a senior militant figure."