The 2013 chemical attack was exposed as a false flag by ISIS and/or McCain’s own “nice guy rebels”, in the London Review of Books, and before and afterward by European journalists:
ISIS and others have been working on chemicals for their war and in other reporting they’ve used them.
Trump was trumped by ISIS. ISIS and its McCain-backed allies got him to help them. Operation Mockingbird Media hired mouths continue repeating the lie about the 2013 attack, but the New York Times left it out of a long list of bad things Assad has done in Syria. But if they have lied for four years about that one thing and a thousand more, who can believe anything coming from that Deep State propaganda rag?