Speaking in Damascus after meeting Syrian President Bashar al-Assad, Ryabkov also kept up Russian criticism of a report by U.N. investigators on a poison gas attack in the suburbs of Damascus on August 21.
Western governments say the U.N. report confirmed Assad's forces were behind the attack, which led the United States to threaten punitive military strikes before Washington and Moscow reached a deal for Syria to abandon its chemical arms.
Russia says it suspects rebels staged the attack to provoke military intervention, and Ryabkov accused the investigators of all but ignoring evidence presented by the Syrian government that he said supported rebel culpability.
"We are disappointed that there is no due attention paid to this evidence in the report which the (U.N.) group presented in New York earlier this week," he told reporters in Damascus in televised remarks.
"One cannot be as one-sided and as flawed as we have seen, laying the full (blame for the) incident in Ghouta upon the Syrian government," he said, referring to Western nations' interpretation of the report on the August 21 attack.
He said the report was limited in scope and reiterated Russian calls for further investigation that would include accounts from sources such as the Internet and government evidence of alleged chemical arms use in the days after August 21.
Source: Reuters
