Turkish border guards fire tear gas canisters to disperse a crowd of Syrians from the country's northern countryside gathering for a demonstration by the Bab al-Hawa crossing between Turkey and Syria's northwestern Idlib province on August 30, 2019, calling for Turkey to provide protection or safe passage into Turkish territory.   / AFP / Aaref WATAD
Turkish border guards fire tear gas canisters to disperse a crowd of Syrian demonstraters by the Bab Al Hawa crossing between Turkey and Syria's northwestern Idlib province. AFP

UN risks 'humanitarian catastrophe' with cross-border aid decision