The group estimated that the actual toll from the war was more than 606,000...
https://www.bbc.com/news/world-middle-east-35806229
Syria chemical 'attack': What we know
5 April 2017
Updated 26 April 2017
https://www.bbc.com/news/world-middle-east-39500947
Sarin gas in Syria and Putin's 'poisoning' of Navalny: Russia's dark ties to chemical weapons
Mar 10, 2022
https://www.dailymail.co.uk/news/article-10596245/amp/Sarin-gas-Syria-Putins-poisoning-Navalny-Russias-dark-ties-chemical-weapons.html
For people who want to know the TRUTH about Syria and our siding with the terrorists, this is a Frontline report:
https://www.pbs.org/video/frontline-inside-assads-syria/