A volunteer delivers milk to migrants at a park where hundreds of migrants are temporarily residing in Athens, Greece, Friday, Aug. 14, 2015. Greece is Europe's main gateway for refugees and economic migrants, after the alternative route from Libya to Italy became too dangerous. More than 130,000 people have reached the Greek islands this year - a 750 percent increase on 2014.  (AP Photo/Giannis Papanikos)
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