. >> marta fled idlib. after his brother was killed by a barrel bomb. along the road he met another, and they became like brothers, giving courage to each others as they continued their troubles. >> there's no age limit to be a refugee. entire families are on the move. walking on roads, sleeping where they can. there's little space for youngsters to be children these days. >> parents say it's for their sake that they beg their way through europe. but often it's the kids and their resilience that gives them the courage to continue. these parents decided to leave after the school was bombed by the taliban. >> i see with my eyes that my friend died. my teacher died. it's not very good. it's very bad. after the bomb, we don't have a school. because the school go to air. and i stay in home, don't go out because my father said if you go, maybe you kill. we have difficult life and travel. i quiwish - i want better life without kill or stress. i want simple life. >> reporter: the children have their own uncertainties and challenges ahead. this boy doesn't know