Robinson and other members of the SPM working group including Vanessa Beeley, Tim Hayward and David Miller have gained considerable attention for disputing the use of chemical weapons in the Syrian Civil War, most notably in the Douma incident, alleging a coverup by the Organisation for the Prohibition of Chemical Weapons, and extremist links of the White Helmets. This has led to members of the group being described as "apologists for Assad" in articles in "The Times".