This is a false-flag attack designed to motivate moving western operations in Syria from covert to overt. There are already Russians and Chinese in Syria so this could literally kick of WWIII if no one stops it. Unfortunately the media is so well controlled that the ubiquitous war propaganda is generally not questioned.

As demonstrated by the instant downvote of my comment, media that isn't explicitly controlled is generally self-censored to protect the mythical reality supporting the war effort.