"There will possibly be separate talks on the constitutional commission in Sochi. But it will be outside the Astana framework. It's mostly because of logistical reasons. Such a meeting was supposed to happen in Geneva soon, but since all the participants are here now, it may be more convenient," the source said.
Indeed, Vitaly Naumkin, the unofficial Russian adviser to de Mistura and leading expert on the issue of the Syrian constitutional commission, has arrived in Sochi, although he has never before participated in the Astana-format negotiations, which have mostly focused on the ceasefire issue.
In June, representatives of the three guarantors went to Geneva to have focused discussions with de Mistura for the first time on creating the constitutional commission.
The Syrian government's delegation, led by the country's permanent representative to the United Nations, Bashar Jaafari, has arrived in Russia's Sochi to participate in the 10th high-level meeting of the guarantor states for a nationwide ceasefire in Syria, a Sputnik correspondent reported.
Delegations representing other sides to the talks — Russia, Turkey, Iran, the United Nations and the Syrian opposition — are already in the city, ready to start the negotiations.
The two-day Astana-10 talks will start later today. Monday is going to see a marathon of closed-door bilateral meetings and a session of the working group on detainees.