AFP's chief photographer in Greece Aris Messinis knows what a war looks like. He's covered conflicts in Syria and Libya. He has seen death and suffering. But covering the migrants arriving in their hundreds on the shores of the Greek island of Lesbos has affected him more.
"You constantly realize that you're not in a warzone. That you're working in a place where there is peace... the human pain is the same as in a war, but just knowing that you are not in a warzone makes it much more emotional. And much more painful."