Secretary-General's remarks to the Security Council on the report of the United Nations Missions to Investigate Allegations of the Use of Chemical Weapons on the incident that occurred on 21 August 2013 in the Ghouta area of Damascus

NEW YORK Sept. 16, 2013 - The team interviewed more than 50 survivors, medical personnel and first responders. It applied a rigorous and objective selection process designed to identify survivors who may have been exposed to chemical agents. It assessed these individuals' symptoms and collected biomedical samples, including from hair, urine and blood.

The samples were sent for analysis to four laboratories designated by the OPCW. The Mission's factual findings are as follows.

(a) The environmental and biomedical samples demonstrate the widespread nature of the attacks. Eighty-five per cent of the blood samples tested positive for sarin. Biomedical samples were taken from 34 of the 36 patients selected by the Mission who had signs of poisoning. Almost all tested positive for exposure to sarin.

(b) These results were corroborated by the clinical assessments, which documented symptoms and signs consistent with nerve agent exposure. A number of affected patients were diagnosed with intoxification by an organophosphorous compound, and clearly showed symptoms associated with sarin, including loss of consciousness, shortness of breath, blurred vision, eye inflammation, vomiting and seizures.

(c) A majority of the environmental samples confirmed the use of sarin. The samples were taken from impact sites and surrounding areas - locations where survivors were also found to have been affected by sarin.

(d) The team was also able to examine impacted and exploded surface-to-surface rockets that are capable of carrying a chemical payload. These were carefully measured, photographed and sampled. A majority of the rockets or rocket fragments recovered were found to be carrying sarin.

On the basis of its analysis, the Mission concluded that it - and I quote - "collected clear and convincing evidence that surface-to-surface rockets containing the nerve agent sarin were used in the Ein Tarma, Moadamiyah and Zalmalka in the Ghouta area of Damascus."

Due to the security situation and other limitations, the Mission was unable to document the full extent of the use of chemical weapons on 21 August or to verify the total number of causalities.

The United Nations Mission has now confirmed, unequivocally and objectively, that chemical weapons have been used in Syria.

This is a war crime and a grave violation of the 1925 Protocol and other rules of customary international law.  I trust all can join me in condemning this despicable crime. The international community has a responsibility to hold the perpetrators accountable and to ensure that chemical weapons never re-emerge as an instrument of warfare.

The accession of Syria to the Chemical Weapons Convention and Syria's belated acknowledgement that it possesses chemical weapons are welcome developments that come with strict obligations.