As Hungary begins work on a border fence to keep out migrants, its neighbor Serbia is struggling to cope with the steady flow of people making their way toward the European Union. At a new refugee center in the town of Presevo, volunteers are offering what little aid they can to migrants from Syria, Iraq, Congo, and elsewhere before they continue westward. (Milan Nesic and Zoran Glavonjic, RFE/RL's Balkan Service)