The publications challenge evidence from an OPCW investigation into the alleged chemical weapons attacks on 7 April 2018, which militants claim the Syrian Arab Army was responsible for - a stance backed by the US, UK, and France. The new release says the final report does not reflect the views of the actual participants in the fact-finding mission.

The WikiLeaks website has released its third package of documents concerning a chemical weapons report on the Syrian city of Douma published by the Organisation for the Prohibition of Chemical Weapons (OPCW).

It includes a memorandum written in protest by one of the scientists that participated in the fact-finding mission (FFM) - and the final report "with relevant comments from a member of the original FFM".

RELEASE: Third batch of documents showing doctoring of facts in released version of OPCW chemical weapons report on Syria. Including a memo stating 20 inspectors feel released version “did not reflect the views of the team members that deployed to [Syria]”https://t.co/ndK4sRikNk — WikiLeaks (@wikileaks) December 15, 2019

The memo reveals that around 20 scientists ("the FFM core team") who participated in the FFM in Douma were not involved in writing the final version and an almost entirely new team was assembled to contribute to the final report.

"This new team was staffed with people who 'had only operated in country X', according to the memorandum. It is not clear what country that refers to, except that it is presumably not Syria", the website wrote.

The newly released batch also includes - for the first time - the preliminary and interim reports along with their redacted versions for comparison.

In particular, they contain information concerning the two chloride cylinders that are supposed to be the evidence of the alleged attack and were reportedly observed at two locations in Douma. It appears that some knowledge about the cylinders was deliberately omitted in the redacted version of the OPCW report, namely, the information about part-per-billion (ppb) concentration levels (used to measure the concentration of a contaminant in soils and sediments) and the actual origin of those cylinders. It also indicates how the final report went through significant changes discussed in e-mail exchanges by OPCW employees.

This lack of a satisfactory explanation was accounted for by the aforementioned Engineering Assessment by Ian Henderson, which concluded the cylinders were manually placed. None of this in either Interim or Final Reports. pic.twitter.com/RHF98UuOa9 — Caitlin Johnstone ⏳ (@caitoz) December 15, 2019

Inspectors were saying concentrations of chemicals found need to be included to keep people from reading the Interim Report as concluding that a chlorine gas attack occurred. Those concentrations were never once included in either the 2018 Interim Report or the 2019 Final Report. pic.twitter.com/eQlgAPCaIh — Caitlin Johnstone ⏳ (@caitoz) December 15, 2019

According to the author of the memo mentioned above, upon his return from the FFM in Douma, the author was assigned the task of analysing and assessing the ballistics of the two cylinders, but was excluded from the work, "for reasons not made clear".

He accepted the task though with a clear understanding that he was "the most qualified team member", the scientist said. According to him, he has been to locations in Douma, possesses experience in metallurgy, chemical engineering (including pressure vessel design), artillery, and defence R&D.

"In conclusion, I must stress that I hold no opinion, interest or strong views on the technical part of the matter, nor any interest in the political outcomes. My interest is in sound technical rigour; the science, engineering and facts will speak for themselves", the author of the memo said.

In addition to be excluded from the work, the scientist was repeatedly denied updates on the final report and even forbidden from reviewing it.

He said that his current assessment was obviously that the FFM report is incomplete.

Controversy Over Alleged Chemical Attacks in Douma

The WikiLeaks materials suggest that the final report by OPCW was intentionally doctored and mispresented by the body, through the deliberate selective omission of facts.

In a leaked e-mail published by the website on 24 November, it stated that the report didn't contain evidence to substantiate that Damascus had used a chlorine agent in the attack since residual chemicals could be a part of household chlorine-based bleach and the exposure symptoms, shown on a notorious video published by the White Helmets, didn't correspond with witness testimony.

OPCW distortions: "Crucial facts “...have morphed into something quite different to what was originally drafted.”@LatuffCartoons

Leaked email:https://t.co/Z3N1r0xkZ4 pic.twitter.com/vZ5dMmOgZe — WikiLeaks (@wikileaks) November 24, 2019

The White Helmets, who claim to be an NGO and a rescue organisation, have on numerous occasions been spotted working with the al-Nusra Front*, and working in areas where armed groups and outright terrorist groups operate.

On 23 October, the website published the findings of a panel that listened to testimony and reviewed the evidence provided by an OPCW whistleblower.

WikiLeaks release: A statement from the panel tasked with investigating evidence from a OPCW whistleblower regarding the Douma alleged chemical attack in Syria, April 7, 2018. casts doubts on the accuracy of the OPCW final report. https://t.co/0y1MRStibG — WikiLeaks (@wikileaks) October 23, 2019

In March, the OPCW concluded that chlorine was most likely used in the suspected April 2018 attack in the city of Douma, northeastern Syria, where, according to local militants, cited by Western media, toxic gas came from cylinders dropped from aircraft. They claimed Syrian government forces who had complete air superiority at the time were responsible for the alleged attack.

An investigation was opened in light of the video published by the White Helmets showing the purported chemical gas attack in Douma and the OPCW relied on that information in their report.

The footage showed the White Helmets administering unknown medicine and pouring water on several people at a local hospital, including children to allegedly treat them for the effects of the attack. It was used by the US, UK, and France to justify massive missile strikes against Syrian military targets, accusing its government of the atrocity despite a preliminary OPCW report not being ready.

Russian officials revealed that the equipment used to make advanced explosives and chemical weapons at labs in recently liberated Douma had been made in Europe and North America. Syrian President Bashar Assad also accused Western powers of using "stories" about the Syrian Army's use of chemical weapons as a "pretext for direct military intervention" against the country.

The Russian Foreign Ministry stressed that the OPCW had ignored evidence provided by Russia and Syria, confirming that the attack had been staged by the White Helmets, and expressed concern that the document sought to justify foreign strikes against Syria.

*Al-Nusra Front (also known as Jabhat al-Nusra, Jabhat Fatah al-Sham, or al-Qaeda in Syria) is a terrorist group outlawed in Russia