BEIRUT (IRIN) - Of the 10 million refugees worldwide, half are children, estimates UK-based World Vision -- children who will grow up as a "lost generation" unless more is done to address their needs. "To preserve the young generation growing up today, we need to shield children from violence, enhance humanitarian access and provide more resources targeted to children's specific needs," World Vision said in a report highlighting the plight of Iraqi refugee children in Jordan, released to coincide with 20 June, World Refugee Day.