This is up there with Hillary and Libya. An "evidence-free" decision as far as I'm concerned.
https://www.antiwar.com/blog/2017/06/25/intel-behind-trumps-syria-attack-questioned/#more-29263
Legendary investigative reporter Seymour Hersh is challenging the Trump administration’s version of events surrounding the April 4 “chemical weapons attack” on the northern Syrian town of Khan Sheikhoun – though Hersh had to find a publisher in Germany to get his information out.
In the Sunday edition of Die Welt, Hersh reports that his national security sources offered a distinctly different account, revealing President Trump rashly deciding to launch 59 Tomahawk missiles against a Syrian airbase on April 6 despite the absence of intelligence supporting his conclusion that the Syrian military was guilty. ...
“According to intelligence estimates, the strike itself killed up to four jihadist leaders and an unknown number of drivers and security aides. There is no confirmed count of the number of civilians killed by the poisonous gases that were released by the secondary explosions, although opposition activists reported that there were more than 80 dead, and outlets such as CNN have put the figure as high as 92.”
Due to the fog of war, which is made denser by the fact that jihadists associated with Al Qaeda control the area, many of the details of the incident were unclear on that day and remain so still. No independent on-the-ground investigation has taken place.
But there were other reasons to doubt Syrian guilt, including the implausibility of Syrian President Bashar al-Assad choosing that time – while his forces were making dramatic strides in finally defeating the jihadists and immediately after the Trump administration had indicated it had reversed President Obama’s “regime change” policy in Syria – to launch a sarin attack, which was sure to outrage the world and likely draw US retaliation.
However, logic was brushed aside after local “activists,” including some closely tied to the jihadists, quickly uploaded all manner of images onto social media, showing dead and dying children and other victims said to be suffering from sarin nerve gas. Inconsistencies were brushed aside – such as the “eyewitness” who insisted, “We could smell it from 500 meters away” when sarin is odorless.