The Douma chemical attack was an incident that took place on 7 April 2018 in the Syrian city of Douma that reportedly killed at least 70 people. Reports from the area claimed that a mixture of chlorine gas and sarin was used in the attack.
Robert Fisk investigated the site of the alleged attack on 16th April and visited the clinic where the video of casualties was taken. Fisk interviewed Dr. Assim Rahaibani from the clinic who claimed the victims were suffering from oxygen starvation & dust inhalation, not poison gas. He claimed that a member of the White Helmets started a panic by shouting "gas" and then recorded the video. Fisk also interviewed civillians in the area and could find no witnesses or evidence of the attack.
On April 26, Russian and Syrian officials brought 15 Syrians, including Hassan Diab to a news conference in the Hague who said they had not seen any evidence of chemical weapons being used.