AMMAN, Jordan—Ten of thousands of people have fled to Syria’s border with Turkey in the last few days as a Syrian army advance pushed further into the opposition’s last major stronghold, residents, rights groups and opposition sources said on Aug. 21.
They left Maarat al-Numan, a city in Idlib province that has been a sanctuary for families fleeing former rebel areas, as a Russian-led push has come close to capturing the strategic town of Khan Sheikhoun further south.
