It is reported by the Khasan Roukhani, the Iranian president's office.
"The leaders decided to hold the next meeting in Russia at the invitation of President Vladimir Putin. The presidents discussed the current situation in Syria, summed up the changes that have taken place in the SAR since their last summit in Ankara on April 4 and agreed to continue the tripartite coordination. They analyzed the situation in the de-escalation zone in Idlib and decided to approach the problem in accordance with the spirit of cooperation inherent in the Astana format," the message reads.
The message was distributed following the meeting of the presidents of the guarantor countries of the Astana process, Vladimir Putin, Hasan Roukhani and Tayyip Erdogan, which hold on September 7 in Tehran.