TOPSHOT - Men believed to be Islamic State fighters and their families walk in a field as they leave the IS' embattled holdout of Baghouz on February 13, 2019 during an operation by the US-backed Syrian Democratic Forces (SDF) to expel the Islamic State group from the area, in the eastern Syrian province of Deir Ezzor. - Syrian fighters backed by artillery fire from a US-led coalition battled a fierce jihadist counteroffensive as they pushed to retake a last morsel of territory from the Islamic State group in an assault lasting days. More than four years after the extremists declared a "caliphate" across large parts of Syria and neighbouring Iraq, several offensives have whittled that down to a tiny scrap of land in eastern Syria. (Photo by Fadel SENNA / AFP)