The PKK are supporting it. A declared terrorist organization based upon marx's death cult teachings, they regularly use terror against the Turkish government and people. America does not openly support the entire anti Assad movement, consequently America is an enemy. With the deaths of the pkk leaders in France, maybe they blamed the USA. Did you read the BBC write up on the loss of three communists in Paris? They failed to mention that TERRORISTS died. Ahh, the bbc...
Key U.S. House Democrat cites troublesome issues in Iran nuclear deal (Reuters)
from the article: U.S. calls embassy bombing in Turkey a terror attack