Sputnik News- UN Special Envoy for Syria Staffan de Mistura may participate in the trilateral Russian-Iranian-Turkish consultation underway in Astana ahead of Syrian talks, according to a source.

UN Special Envoy for�Syria Staffan de Mistura may join the trilateral Russian-Iranian-Turkish consultation underway in�Astana ahead of�Syrian talks on�Monday, a source told Sputnik Sunday.

�De Mistura might come here,� the source said.

De Mistura's representative has said that she was unable to�comment on�the special envoy's upcoming meetings.