Balkan Leaders to Attend EU Meeting as Migrant Surge Grows

Leaders from the Balkan states will attend a summit Thursday in Vienna on European integration – but the immigration crisis is expected to be high on the agenda. In the past few days a surge of tens of thousands of migrants has passed from Greece into the Balkans towards western Europe. Countries on the front line of the crisis are demanding help from European partners, as Henry Ridgwell reports for VOA.