BBC News 
May 28, 2013
Russia says it will go ahead with deliveries of S-300 anti-aircraft missiles to Syria, and that the arms will help deter foreign intervention.
Deputy Foreign Minister Sergei Ryabkov said the missiles were a “stabilising factor” that could dissuade “some hotheads” from entering the conflict.
Russia also criticised an EU decision not to renew an arms embargo on Syria.
Meanwhile, the BBC has heard evidence that 200 people were killed in a massacre in western Syria this month.