MOSCOW (Reuters) - United Nations special envoy on Syria, Staffan de Mistura, said a meeting with Russian Foreign Minister Sergei Lavrov in Moscow on Friday was  useful , Russia s Interfax news agency reported. He declined additional comments before the end of a Syria s opposition meeting in Riyadh. He also said he planned to discuss Syria with Russia s defense minister later on Friday.  
U.N. special envoy on Syria says had 'useful' meeting with Russia's Lavrov: Ifax