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IDOMENI, GREECE - MAY 21: A refugee stands on puddle of water among makeshift tents where he sleeps, at Idomeni refugee camp in Greece on May 21 2016. Refugees are still confined in the makeshift refugee camps, located at the Greek Macedonian border, waiting for the border to re-open. (Photo by Ayhan Mehmet/Anadolu Agency/Getty Images)

IDOMENI, GREECE - MAY 21: A refugee stands on puddle of water among makeshift tents where he sleeps,  at Idomeni refugee camp in Greece on May 21 2016. Refugees are still confined in the makeshift refugee camps, located at the Greek Macedonian border, waiting for the border to re-open. 

 (Photo by Ayhan Mehmet/Anadolu Agency/Getty Images)