1. Turkey supplied chemical weapons to groups in Syria who used on their own people.
2. Turkey is helping to sell oil for Islamic State therefore is helping to fund them.
Turkey supplied chemical weapons to groups in Syria seeking the removal of the Government in Syria. Groups used chemical weapons on innocent men, womenand children in order to get the US Government to attack the Army and Government of Syria.
This plan did not work, no attack took place against the Army and Government of Syria because the U.S. found out that groups used chemical weapons on their own people.