Syria’s chemical weapons “were created by the British, even after sanctions had been imposed on Assad”.
No evidence given. Repeating recurring pro-Kremlin disinformation on chemical attack in Douma, Syria. euvsdisinfo.eu/disinformation-cases/?text=syria&disinfo_issue=&disinfo_keywords%5B%5D=77353&date=,
Syria's chemical weapons development probably dates back to the 1970s. For the history of Syria's chemical weapons, see fas.org/sgp/crs/nuke/R42848.pdf,
European Union imposed restrictive measures on Syria in 2011 publications.europa.eu/en/publication-detail/-/publication/bbd8dca1-b6d0-4ce1-bcee-896df0022868/language-en,
The declared Syrian chemical weapon stockpile was reported to be completely destroyed in 2014. www.washingtonpost.com/news/checkpoint/wp/2014/08/18/declared-syrian-chemical-weapon-stockpile-now-completely-destroyed/?noredirect=on&utm_term=.a2a01c4ebf62,
UN-OPCW Joint Investigative Mechanism found Syria’s Government responsible for last year’s attack in Khan Shaykhun.
In September 2017, the UN Commission of Inquiry on the Syrian Arab Republic summarized 33 separate incidents where it had found use of chemical weapons. Since then there have been several additional suspected chemical attacks. Between March 2013 and March 2017, the Commission documented 25 incidents of chemical weapons use in the Syrian Arab Republic, of which 20 were proven to have been perpetrated by government forces and used primarily against civilians.