"The Syrian president has made the decision to send his part of a delegation to form the Constitutional Committee that is to work on Syria's constitutional law".
For its part, Russia's Kremlin manifested that Assad had expressed his willingness to Putin to start a political compromise to solve the Syrian issue, following a meeting with Russian defense and foreign ministers.
Kremlin Spokesman Dmitry Peskov said: "The Russian President noted and congratulated Assad on the considerable success of the government forces in the fight against terrorist groups".
The Russian leader said the military successes have created suitable conditions for the resumption of the political process in Syria. The fallout over the Iran deal is a rare topic for rapprochement between Europe and Moscow, whose relations are marred by disagreements over the Syria conflict, Moscow's 2014 annexation of Crimea and the subsequent war in eastern Ukraine.
Putin said the next task is "economic recovery and humanitarian assistance to the people who found themselves in a hard situation". Its military support not only ensured the survival of Mr Assad's regime, it changed the course of the war. The UN has hosted several rounds of peace talks in Geneva that have made no progress towards ending the conflict.More news: Trump discloses payments to attorney who paid off porn star
The two leaders in the Black Sea resort of Sochi.
"Stability is growing, and all this opens the door to a political process that we started some time ago".
Russian television broadcast short clips from the two men's discussion.
De Mistura, speaking Wednesday to the UN Security Council's monthly meeting on the Syria conflict, described what he called the classic Syrian regime tactic of a bombardment of a rebel territory followed by negotiations and then mass evacuations from the defeated area.
It said that Russian Federation welcomes and supports this decision based on agreements reached in national dialogue meetings in Sochi.