Idlib province, where a ceasefire is now in effect, is Syria’s last rebel-held stronghold.
A four-month offensive in Idlib by forces of Syrian President Bashar al-Assad has caused a massive outflow of refugees to Turkey.
Turkey already hosts 3.6 million Syrian refugees.
On Monday, al-Assad’s allies Russia and Iran are meeting with Turkey to discuss peace.
Al Jazeera’s Jamal Elshayyal reports live from Ankara.
