The director of the Foundation for the Study of Democracy, Maxim Grigoriev, presented at the Security Council testimonies of residents of the Syrian city.
According to witnesses, there is undeniable evidence that the chemical attack in the Duma was falsified, Grigoriev noted.
According to RIA Novosti, he read out a series of transcripts of conversations with local residents who noted that people injured by chemical attacks did not enter the Duma hospital.
Russia's Permanent Representative to the OPCW, Alexander Shulgin at a meeting of the Security Council, called for a briefing with the participation of experts from the OPCW Mission to establish the facts of the use of chemical weapons in Syria, who worked on the incident in the Duma.
Earlier, Shulgin said that Western countries deliberately hide the details of the "chemical attack" in the Syrian city of the Duma.