This Daily Mail report from solid sources was published in Jan 2013. It has since been pulled from their website. It explains exactly how a chemical attack on Syria was planned and backed by US and Britain and then blamed on Assad as a justification for military action. That time it failed when an investigation discovered that the chemical weapons were used by the US-backed ISIS (AKA "moderate rebels").

http://web.archive.org/web/20130130091742/http://www.dailymail.co.uk/news/article-2270219/U-S-planned-launch-chemical-weapon-attack-Syria-blame-Assad.html

This time in 2017 no investigation was done. You couldn't make it up.