Russia questions report blaming Syria regime for gas attacks

Russia has questioned the findings of a UN-led investigation that blamed the Syrian regime for chemical attacks, saying they were not conclusive enough to trigger sanctions.

Britain and France called for UN sanctions after the investigative panel found that President Bashar al-Assad's forces had carried out at least two chemical attacks, one in 2014 and one in 2015.

Following a closed-door Security Council meeting to discuss the report, Russian Ambassador Vitaly Churkin said on Tuesday he had "very serious questions" about the findings and suggested the panel should continue its work.

"There are a number of questions which have to be clarified before we accept all the findings of the report," Churkin said.

Previous reports from the Organisation for the Prohibition of Chemical Weapons (OPCW) had concluded that toxic gases have been used as weapons in Syria's five-year war, but stopped short of identifying the perpetrators.

The panel of inquiry, known as the Joint Investigative Mechanism (JIM), for the first time pointed the finger of blame at the Assad regime for chemical weapons use after years of denial from Damascus.

The British and French ambassadors described the use of chemical weapons against civilians as a war crime, while US Ambassador Samantha Power called for quick action to ensure those responsible "pay a price."

Churkin, however, made clear he was unconvinced by the JIM report.

"There is nobody to sanction in the report," Churkin told reporters. "It contains no names, no specifics, no fingerprints."

"Clearly there is a smoking gun. We know that chlorine was most likely used, but there are no fingerprints on the gun," he said.

The panel found that the Syrian regime had dropped chemical weapons on two villages in northwestern Idlib province: Talmenes on April 21, 2014 and Sarmin on March 16, 2015.

In both instances, Syrian air force helicopters dropped "a device" on houses that was followed by the "release of a toxic substance," which in the case of Sarmin matched "the characteristics of chlorine."

Chlorine use as a weapon is banned under the Chemical Weapons Convention, which Syria joined in 2013, under pressure from Russia, Assad's ally.

Syrian Ambassador Bashar Jaafari rejected the findings, saying the panel lacked "physical evidence" to support its conclusions that chlorine barrel-bombs were dropped on civilians.

The report was "totally based on witnesses presented by terrorist armed groups," Jaafari told reporters.

French Ambassador Francois Delattre called for a "quick and strong Security Council response" that would include "imposing sanctions on those who are responsible for these acts."

The council will be "looking at the imposition of sanctions and some form of accountability within international legal mechanisms," said British Ambassador Matthew Rycroft.

The report also found that Islamic State jihadists had used mustard gas in an attack on the town of Marea in northern Aleppo province in August 2015.

Human Rights Watch called on the council to refer Syria to the International Criminal Court for war crimes and to urgently impose sanctions.

Britain, France and the United States said such a step remained an option, even though Russia and China blocked ICC referral in 2014.

"Russia and China don't have a leg to stand on by continuing to obstruct the Security Council on Syria sanctions and ICC referral," said Louis Charbonneau, UN director at Human Rights Watch.

"The Security Council diminishes its importance if it doesn't take strong action against demonstrated use of chemical weapons by the Syrian government.