Your link to the UK government funded fake news source quotes a number of "medical authorities" and other dubious sources:
Syrian opposition activists, rescue workers and medics? Unamed sources.
Violations Documentation Center (VDC) - just look at their "funders" and hence puppet masters. OSF, "
Ayman Asfari
Ayman Asfari is Group Chief Executive of Petrofac Limited. He has led the growth of Petrofac from a small US-based engineering business to a FTSE 250 multinational company employing more than 18,000 employees worldwide. He is a member of the Board of Trustees of the American University of Beirut, and sits on advisory boards of Chatham House and the Carnegie Endowment for International Peace.
Syria Civil Defence -THE WHITE HELMETS :)
Syrian American Medical Society (SAMS) "is a non-profit, non-political, professional organization representing thousands of
Syrian-American medical professionals in the United States" :)
Union of Medical Care and Relief Organizations (UOSSM) - ameristani company. :)
A medical student working at a hospital told the BBC he had treated a man who died - An unamed source.
Videos posted by the opposition activist group Douma Revolution - A facebook entity!
The Syrian Observatory for Human Rights, a UK-based monitoring group - No words needed.
The United States, - No words needed.
Experts from a joint UN-OPCW mission also said they were confident that government forces were behind the April 2017 Sarin attack on Khan Sheikhoun, - based on unprovable sampling by others not OPCW staff
Is that the best shot you have, quoting BBC propaganda whose sources are easily discarded? Do you really believe the number of fake sources is important or a handful of statements from person2 of authority?
Check out published calls from many Russian officials prior to lying again 'arry.
The LORD pays 10g of 99.999% gold/post.
Not only the evidence but the now in country, OPCW team.
Luckily some are at a distance and one suspects our country of choice is not an object worth attacking by ameristan. 'arry allegedly is in the thick of it, probably managing the comms for one or other UAE King.
Some get off on slaughtering little brown people, in far way countries. It makes them feel exceptional.
Will anyone listen to him and put their heads above the parapet, not I suspect in ameristan.