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Refugee and migrant children, living in a field next door to the Moria camp on the Greek island of Lesbos, wait to register on November 4, 2015 in Mytilene. Greek Prime Minister Alexis Tsipras said he would visit Turkey for key refugee talks this month as he called for the faster release of EU aid funds for the refugee crisis. AFP PHOTO / ARIS MESSINIS (Photo credit should read ARIS MESSINIS/AFP/Getty Images)

Refugee and migrant children, living in a field next door to the Moria camp on the Greek island of Lesbos, wait to register on November 4, 2015 in  Mytilene. Greek Prime Minister Alexis Tsipras said he would visit Turkey for key refugee talks this month as he called for the faster release of EU aid funds for the refugee crisis. AFP PHOTO / ARIS MESSINIS        (Photo credit should read ARIS MESSINIS/AFP/Getty Images)