TOPSHOT - A fighter with the US-backed Syrian Democratic Forces (SDF) keeps position during an operation to expel Islamic State group (IS) jihadists from the Baghouz area in the eastern Syrian province of Deir Ezzor on February 13, 2019. - 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)