It is NOT what it seems. The previous Sarin attacks in 2013 were blamed on the Assad Government. Then it turned out to be Sarin shipped in through Turkey and the weaponisation completed in ISIS occupied Syria by ISIS with technical support from its western backers (the Company and the Usual Suspects). The MSM went very quiet once this was revealed. Seymour Hersh wrote an excellent, lengthy explanation of Obama and Hillary's warmongering and inhuman involvement in the gassing of Syrian civilians. It was published in the London Review of Books.

https://www.lrb.co.uk/v35/n24/seymour-m-hersh/whose-sarin

The latest atrocity is without a doubt another attempt to smear Assad and create an excuse for US Military Industrial Complex involvement in rebooting a war which was reaching its closing stages.