Following the session of the working group, there will be a number of bilaterals at the level of delegations' heads and experts.
A plenary session is expected on Wednesday afternoon.
Astana meeting brings together the delegations from the three guarantor states — Russia, Iran and Turkey — as well as the Syrian sides and the United Nations teams. Jordan and the United States act as observers.
The latest Astana meeting in May was a breakthrough, as the three ceasefire guarantor states signed a memorandum on the establishment of four de-escalation zones in Syria.
SPUTNIK/MNA