The government officials in Syria have repeatedly said that the reconciliation is a priority in Idlib, or else there will be a wide-scale offensive to retake Idlib, which is the last major rebel stronghold in Syria.
Turkish President Recep Tayyip Erdogan and his Russian counterpart Vladimir Putin are slated to meet Monday, said Turkish Foreign Minister Mevlut Cavusoglu.
We will remind, last time the leaders of Russian Federation and Turkey met in Ankara in April 2018.
Located near the Turkish border, Idlib is home to almost two million internally displaced people, who fled from other cities following attacks by the regime forces.
United Nations agencies and relief organisations have warned repeatedly that such an assault could spark one of the worst humanitarian disasters of Syria's seven-year war.
Russian Federation and Iran are major allies of the Syrian government, while Ankara backs some rebel fighters.
The war has killed 110,687 civilians, including more than 20,000 children and almost 13,000 women.
"We are making an effort for a ceasefire in Idlib", he said, repeating Turkey's call for targeted operations against jihadist militants, including the Tahrir al-Sham alliance, instead of an indiscriminate onslaught.
A wall along the border between Turkey and Syria is pictured at the Syrian town of Atimah, Idlib province, in this picture taken from Reyhanli, Hatay province, Turkey October 10, 2017.
The largest chunk of rebel-held territory left comprises the province of Idlib and surrounding areas, where an estimated three million people live.
Idlib and surrounding areas are home to almost 3 million people, half of them already displaced by violence in different parts of Syria.
Ankara, which hosts some 3.5 million refugees, has said it could not take any more if an attack on Idlib drove a new surge of people towards its border.
The Turkish military, which is deployed across an arc of northwest Syria near Idlib with its rebel allies, has also set up 12 observation posts around Idlib this year. "We have seen it in use before, and we strongly advise that it does not happen in this enclosed area, where the population has, I think, nearly doubled by the influx of evacuees and IDPs from other parts of the country".
"It appears that the Russians and the Assad regime have temporarily looked the other way", said one of the sources, Colonel Mustafa Bakour, a commander in the Jaish al-Ezza rebel group.
"And we are also assisting in creating humanitarian corridors and safe havens for civilians", he added.
For Russia and Iran, recapturing Idlib would deal a decisive defeat to the opposition and stamp out the last remains of the rebellion against Assad that began in 2011.