A major migrant crisis is currently occurring in Europe, with hundreds of thousands of people fleeing their war-torn home countries in the Middle East and North Africa.
Nearly 500,000 migrants have arrived in Greece so far this year, with more than half coming to Lesbos, according to EU border agency Frontex.
According to the International Organization for Migration (IOM), the number of refugees who have crossed the Mediterranean Sea in 2015 to arrive in Greece was 15 times higher than last year.
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