Saraqib, Al Eis and dozens of other cities and towns were liberated. Large parts of the M5 highway in Idleb are now under Syrian government control.

Idleb governorate Feb 10 2020

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The aim of the current campaign is to regain control over the M5 highway between Damascus and Aleppo city and the M4 highway between Latakia and Aleppo. These highways are of importance for the revival of Syria's economy.

It was originally Turkey's task to guarantee free civilian traffic on both highways. The Sochi Memorandum of Understanding (pdf) between Turkey and Russia, signed on September 17 2018, provides (machine translated):

3. A demilitarized zone with a depth of 15-20 km will be created in the de-escalation zone.

4. The specific passage of the lines defining the demilitarized zone will be agreed upon in the course of further consultations.

5. All radical terrorist groups will be withdrawn from the demilitarized zone by October 15, 2018.

6. All tanks, artillery, MLRS and mortars of the conflicting parties will be withdrawn from the demilitarized zone by October 10, 2018.

7. The Armed Forces of the Republic of Turkey and the military police of the Armed Forces of the Russian Federation will carry out coordinated patrols and monitoring using unmanned aerial vehicles in the demilitarized zone.