Refugees and migrants with children arrive on the Greek island of Lesbos, on October 7, 2015, after crossing the Aegean sea from Turkey. Greek premier Alexis Tsipras said on October 6 that Athens would upgrade its refugee facilities by November to tackle the growing influx from Syria as the EU pledged 600 extra staff to help. Europe is grappling with its biggest migration challenge since World War II, with the main surge coming from civil war-torn Syria. AFP PHOTO / ARIS MESSINIS (Photo credit should read ARIS MESSINIS/AFP/Getty Images)
