The tragic death of Alan Kurdi, the Syrian toddler who drowned off the Turkish coast a year ago, triggered a global outpouring of emotion and calls for a more effective and humane response to support refugees and migrants.
More recently, the picture of another Syrian boy, Omran Daqneesh, sitting dazed in the back of an ambulance after an airstrike in Aleppo, drove home the immense cost of war and spurred a renewed call to end the misery.