Assad is pointing the finger at Turkey and Saudi Arabia. He claims that Erdogan's forces are heavily involved in Syria, and that they are "crossing a red line." I will be curious to follow the relations between these two countries.
Why is there particular revulsion over such attacks versus conventional warfare? The population feels they can do nothing to protect themselves. Chemical weapons are invisible and indiscriminate killers than could affect anyone at any time. The fear can even cause symptoms that aren't real.
Iran warns U.S. to not violate the nuclear deal by stepping into ballistic missile testing. They claim missile tests did not violate any regulations and if the U.S. steps in it would break the deal.