BEIRUT (AP) — A U.N. report on Syria said Tuesday there are "reasonable grounds" to believe that limited quantities of toxic chemicals have been used as weapons in at least four attacks in Syria's civil war, but said more evidence is needed to determine the precise chemical agents used or who used them.
The U.N. Commission of Inquiry said conclusive findings can be reached only after testing samples taken directly from victims or the site of the alleged attacks. It called on Damascus to allow a team of experts into the country.
President Barack Obama has said repeatedly that Syria's use of chemical weapons, or the transfer of its stockpiles to a terrorist group, would cross a "red line." Tuesday's report appeared to strengthen U.S. officials' assertions that more definitive proof was needed.
The commission's report to the Human Rights Council on violations in Syria's conflict accused both sides of committing war crimes. In an apparent message to European countries considering arming Syrian rebels, the report warned that the transfer of arms would heighten the risk of violations, leading to more civilian deaths and injuries.
"War crimes and crimes against humanity have become a daily reality in Syria where the harrowing accounts of victims have seared themselves on our conscience," the report said. "There is a human cost to the increased availability of weapons," it added.
U.N.-Secretary General Ban Ki-moon has appointed a U.N. team to investigate alleged chemical weapons attacks in Syria after the Syrian government asked him to investigate a purported attack by rebels on March 19 on Khan al-Assal village near the northern city of Aleppo. But the Syrian government insists that a probe be limited to that incident.
Syrian soldiers were reportedly killed and injured in the incident, which the rebels blame on Syrian forces. Opposition activists have claimed more than six instances when regime forces used chemical weapons.
Ban is insisting on a broader investigation, including a December incident in Homs. He appointed Swedish chemical weapons expert Ake Sellstrom to lead a U.N. investigation. Syria has refused to allow his team into the country.
Last week, Syrian Foreign Minister Walid al-Moallem said Iraq under Saddam Hussein inadvertently paved the way for the 2003 U.S.-led invasion by allowing U.N. inspectors into the country, and suggested Syria is not about to make the same mistake. "We will not allow teams of inspectors to come to Syria to do whatever they want," he said in a TV interview.
Syria is widely believed to have the world's fourth largest arsenal of chemical weapons, including mustard and nerve gas. The regime of President Bashar Assad has denied using such weapons during the civil war.
The confirmed use of chemical weapons could escalate the international response to the more than two-year-old conflict, which has killed more than 70,000 people, according to the United Nations. President Barack Obama has said their use would be a "red line," but the administration says it still looking for solid evidence.
Explaining its position in an April letter to two U.S. senators, the administration referred to intelligence assessments concluding "with varying degrees of confidence" and based in part on physiological samples that the regime has used chemical weapons on a small scale, specifically the nerve agent sarin. The letter said such assessments are not sufficient grounds for action because it is not clear how the exposure occurred and under what circumstances.
Since then, the governments of Britain, France and Turkey have also said there are indications of chemical weapons use, but that more testing is required.
"There are reasonable grounds to believe that chemical agents have been used as weapons," the report said. "It has not been possible, on the evidence available, to determine the precise chemical agents used, their delivery systems or the perpetrator."
The report said there are allegations of government forces using chemical weapons in four instances, but also did not rule out rebels using them.
"It is possible that anti-government armed groups may access and use chemical weapons.... though there is no compelling evidence that these groups possess such weapons or their requisite delivery systems," the report said.
"Conclusive findings - particularly in the absence of a large-scale attack - may be reached only after testing samples taken directly from victims or the site of the alleged attack," it said.
The report, covering the period from mid-January to mid-May, accused both sides of committing war crimes. On the government side, the report accused government forces and affiliated militia of committing torture, rape, forcible displacement and enforced disappearance. On the rebel side, the report accused armed groups of carrying out sentencing and execution without due process, as well as committing torture, taking hostages and pillaging.
But it said violations and abuses by the rebels "did not, however, reach the intensity and scale of those committed by government forces and affiliated militia."
"A dangerous state of fragmentation and disintegration of authority prevails in areas under anti-government armed groups control, despite attempts to fill the vacuum left by the withdrawal of the state through creating local councils," it said.
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