TOPSHOT - Smoke billows following Syrian government forces' bombardment around the village of al-Muntar on the southern edges of the rebel-held Idlib province on September 8, 2018. - Russian air strikes on Syria's last major rebel bastion today were the "most violent" in a month since Damascus and its ally Moscow started threatening it with an imminent attack around a month ago, a monitor said. (Photo by OMAR HAJ KADOUR / AFP)