The European Commissioner for International Cooperation, Humanitarian Aid, and Crisis Response warned that Syria’s refugee crisis will become the world’s worst in decades if a peace plan is not speedily adopted. She criticized further efforts to arm the rebels, and said half of the 1.7 million Syrian refugees are children, who after years of no school will be jobless but “with guns in their hands.” A rights group called on the Red Cross to investigate conditions at Aleppo central prison, which has been besieged by rebel forces since April.