Washington reviewing claims that money is being given to militant group . U.N. says 60 % of people who need food live in rebel - controlled areas . A senior administration official and an administration official spoke about the issue on the condition of anonymity because they were not authorized to speak publicly . Millions could run out of food in the next few days , it says .
Washington reviewing claims that money is being given to militant group . U.N. says 60 % of people who need food live in rebel - controlled areas . Millions could run out of food in the next few days , it says .