'The largest displacement of people in the whole history of the Syrian war'
More than 800,000 people - 60% of them children - have fled their homes in north-western Syria since December as a result of an assault by Syrian pro-government forces on the opposition’s last stronghold. David Miliband is the President of the International Rescue Committee.
(Photo: Displaced Syrians flee the countryside of Aleppo and Idlib provinces towards Syria"s northwestern Afrin district near the border with Turkey. Credit: Getty Images)