The suggestion is unlikely to appeal to Ankara, which is keen to set up the zone but has stressed it must be under Turkish control, with only its own forces deployed there, according to Reuters.

“Our only expectation from our allies is that they provide logistical support,” Turkish President Tayyip Erdogan told his supporters in a speech in January.

Russia has said that Turkey had no right to set up the zone without seeking and receiving consent from Syrian President Bashar al-Assad.

Lavrov was cited as saying on Sunday that the format of the safe zone was in the process of being finalized by military leaders, and that any decision would take the interests of Damascus and Ankara into account as far as possible.

“We have experience in combining ceasefire agreements, safety measures and the creation of de-escalation zones with the roll-out of Russian military police,” Lavrov was cited as saying.

“Such a possibility is being kept open for this buffer zone.”

Reporter’s code: 50101