As tens of thousands of migrants stream across the Balkans splits, spats and threats are features of the European response.br Three Balkan leaders vow to shut borders ahead of EU talks pic.twitter.comaXnkgCQLv9— Press TV (@PressTV) October 25, 2015br br br The leaders of Bulgaria, Serbia and Romania have met to discuss their reaction to the increased flow of migrants across the region following Hungary’s decision to close its borders.br #Bulgaria, #Romania and #Serbia PM's agree & expand collaboration ahead of #WB #Summitbr pic.twitter.com7881sZTNNc— Cees Vis (@CornelisVis) October 24, 2015br br In a statement they said they would close their borders if Germany and Austria blocked entry to migrants.br br EU leaders are meeting to confirm a common stance to a problem that has seen 500.000 migrants and refugees arrive in the Balkans since the beginning of the year.