Belgrade

Migrants sleep on a bench at a park in Belgrade, Serbia, Friday, Aug. 28, 2015. Over 10,000 migrants, including many women with babies and small children, have crossed into Serbia over the past few days and headed toward Hungary and the EU Schengen Area, a zone with no internal border checks between member countries

Marko Drobnjakovic/AP

Migrants sleep on a bench at a park in Belgrade, Serbia on Friday. Over 10,000 migrants, including many women with babies and small children, have crossed into Serbia over the past few days and headed toward Hungary and the EU Schengen Area

Migrants from Syria sleep at a park in Belgrade, Serbia

Marko Drobnjakovic/AP

Migrants from Syria sleep at a park in Belgrade, Serbia. Over 10,000 migrants, including many women with babies and small children, have crossed into Serbia over the past few days and headed toward Hungary and the EU Schengen Area, a zone with no internal border checks between member countries.

Children play with hula hoops at a park ...Children play with hula hoops at a park where migrants have found temporary shelter in the Serbian capital Belgrade on August 25, 2015. A record number of refugees streamed into EU member state Hungary from Serbia on August 24, police said, just days before Hungary completes a border fence to keep out migrants. A total of 2,093 migrants, the highest ever daily total, crossed the border near the Hungarian town of Roszke, a police statement said. They were part of a wave of around 7,000 refugees whose journey to the European Union had been blocked last week when Macedonia declared a state of emergency and closed its borders after being overwhelmed by the huge influx of people, amid Europe's worst migration crisis since World War II.   AFP PHOTO / ANDREJ ISAKOVICANDREJ ISAKOVIC/AFP/Getty Images

Andrej Isakovic/AFP

Children play with hula hoops at a park where migrants have found temporary shelter in the Serbian capital Belgrade

A seal cools off at Belgrade Zoo during a heatwave on Tuesday. In Serbia where the meteoalarm has been raised to 'red', extremely hot weather with temperatures up to 39 degrees Celsius is expected to continue over the next several days

Andrej Isakovic/AFP

A seal cools off at Belgrade Zoo during a heatwave on Tuesday. In Serbia where the meteoalarm has been raised to ‘red’, extremely hot weather with temperatures up to 39 degrees Celsius

Migrants sleep at the main railway stati...Migrants sleep at the main railway station in Belgrade, on July 13, 2015. Migrants cross Serbia to join other European countries, as it has land borders with three EU countries - Romania, Hungary and Croatia. The estimated number of people crossing the Serbia-Hungary border has increased more than 25-fold, rising from 2,370 to 60,602 according to an Amnesty International report

Dimitar Dilkoff/AFP

Migrants sleep at the main railway station in Belgrade, on Monday. Migrants cross Serbia to join other European countries, as it has land borders with three EU countries – Romania, Hungary and Croatia

A woman hangs a red blanket out of her window in Belgrade on March 14, 2014. Serbs will vote in snap polls on March 16 with the ruling Serbian Progressive Party (SNS) tipped to capitalize on a wave of public support after opening membership talks with the European Union. Some 6.7 million voters will elect new deputies for the 250-seat parliament in early legislative elections called by the SNS after Brussels opened accession talks with the Balkan country on January 21.

Andrej Isakovic/AFP

A woman hangs a red blanket out of her window in Belgrade, Serbia. Serbs will vote in snap polls on Sunday with the ruling Serbian Progressive party tipped to capitalise on a wave of public support after opening membership talks with the EU