Heartbreaking moment war photographer tries to save wounded boy after Syrian bus attack... then breaks down after finding a young dead victim

This is the gut-wrenching moment war photographer Abd Alkader Habak dashed to save a wounded boy (left) after the Syrian bus attack - before breaking down in tears (right) after finding another child dead on the ground. The activist was working when a bomb tore through buses carrying evacuees from besieged government-held towns outside Aleppo on Saturday.  He was briefly knocked out by the blast, but got up and started rescuing injured people - only to find that many of the children were already dead. A devastating photo shows him 'overcome with emotion' and sobbing on his knees next to a boy's body, who he had tried to save moments earlier.