A Serbian border policeman looks at a thermal camera screen while on patrol near the town of Presevo, some 383km (238 miles) from capital Belgrade, July 16, 2013. Every year, the Serbian border police catch thousands of migrants from Africa, the Middle East, and elsewhere who are trying to reach Serbia illegally. In many cases they come from Turkey, through Greece to Macedonia and Serbia before they reach Hungary and with it, the borderless Schengen travel zone. With chaos and conflict raging in Syria, last year saw a huge increase in the number of Syrians trying to enter the Western Balkans in search of asylum in the West. Picture taken July 16, 2013. REUTERS/Marko Djurica (SERBIA - Tags: SOCIETY IMMIGRATION POLITICS TPX IMAGES OF THE DAY)

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