UNITED NATIONS — Secretary-General Ban Ki-moon deplored the use of chemical weapons in Syria and demanded Friday that those responsible are held accountable.
Ban told the U.N. General Assembly that the international community also has a moral and political responsibility to deter further incidents and "ensure that chemical weapons can never re-emerge as an instrument of warfare."
He addressed the 193-member world body on the final report issued Thursday by U.N. inspectors who examined seven alleged chemical weapons attacks in Syria. They concluded that chemical weapons were probably used in four locations, in addition to the confirmed attack near Damascus in August that forced the government to abandon its secret chemical stockpile.
The inspectors' limited mandate authorized them to determine whether chemical weapons were used but barred them from identifying whether the government or opposition fighters were responsible for any of the attacks.
Chief inspector Ake Sellstrom told a news conference that "more intrusive methods" than those authorized by the General Assembly for his investigation are needed to pinpoint the perpetrators of the attacks.
"I could speculate … but I don't have information that will stand up in court," he said.
Sellstrom said U.N. member states could authorize a new intrusive "forensic investigation" to determine responsibility, which would require more resources and the use of methods that his team couldn't use. He didn't elaborate.
U.N. disarmament chief Angela Kane told reporters there have been a number of calls for additional investigations to determine who was responsible for using chemical weapons.
A commission created by the U.N. Human Rights Council has already determined that both sides have committed heinous war crimes during the Syrian conflict.
The Geneva-based commission is producing a confidential list of suspected criminals, which is kept under lock and key by U.N. High Commissioner for Human Rights Navi Pillay, and it is expected to eventually weigh in on who bears responsibility for the chemcial weapons attacks.
The confirmed use of the deadly nerve agent sarin on Aug. 21 in the Ghouta area of Damascus, and the threat of possible U.S. military action, led to a U.S.-Russian agreement to eliminate Syria's chemical weapons by mid-2014 and Syrian agreement to join the Chemical Weapons Convention. The process of getting Syrian chemicals that can be used to make weapons out of the country is currently under way.
Sellstrom said the inspectors were pleased that their initial finding on Ghouta led Syria to join the convention and agree to the elimination of its chemical weapons and precursors. Given its mandate, he rated the team's performance at 8.7 on a scale of one to 10.
Thursday's report said evidence indicated chemical weapons were also probably used in Khan al Assal outside Aleppo on March 19 against soldiers and civilians, Jobar in Damascus' eastern suburbs on Aug. 24 against soldiers, Saraqueb near Idlib in the northwest on April 29 against civilians, and Ashrafiah Sahnaya in the Damascus countryside on Aug. 25 against soldiers. In two cases, it found "signatures of sarin."