U.S. reviewing claims that money is being diverted to militant group . the World Food Program estimates 60 percent of people who need aid live in militant-controlled areas . nearly half could run out of food in five consecutive seasons , U.N. says .
Washington reviewing claims that money is being diverted to militant group . U.N. estimates 60 percent of people who need aid live in militant-controlled areas . Millions could run out of food in the next few weeks , U.N. says .