"We have not received an official invitation. Everyone is talking about the talks in Astana, but so far we have not received an official invitation," Berri said.
Kazakhstan's capital of Astana has hosted three rounds of talks on Syrian settlement brokered by Russia, Turkey and Iran, held on January 23-24, February 15-16, March 14-15 with the next round scheduled for May 3-4. During the talks, the participants agreed to set up a ceasefire monitoring group, among other issues.
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