In this Friday, Sept. 11, 2015 photo, Mohammed al-Haj from Syria, with blue jacket, waits to be registered by local authorities in the Serbian town of Presevo. Mohammed, a 26-year-old from Aleppo, was one of more than 600,000 migrants and refugees who flowed into Europe in the first 10 months of 2015. (AP Photo/Santi Palacios)
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