Turkey has no credibility. As reported by Pulitzer prize winner Seymour Hersh, Turkey was behind the 2013 Syrian false flag chemical attacks.

And what convenient timing for these attacks - Assad is winning the civil war, Syrian peace talks are progressing, Trump reversed his stance on ousting Assad - and all of a sudden there's an unconfirmed chemical attack (first reported by a pro-Syrian opposition propagandist.) 

Moreover, in 2013, Syria was forced to destroy all its chemical weapons stores and production facilities. Sarin is VERY difficult to make - requiring millions of dollars worth of equipment and infrastructure. Where would Syria find the money to do this when it had to borrow weapons from Iran and Russia?

This is a hoax. Don't believe a single word the media is telling you about this attack. Especially if the first sentence in any article is about dead children. Reporting on emotions = fake news.