Afghan children gather at a special medical camp set up by UNHCR to mark World Refugee Day in Islamabad on Friday. The U.N. agency says there were 51.2 million displaced people at the end of 2013, 6 million more than the previous year. Farooq Naeem/AFP/Getty Images hide caption

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Syrian-Kurdish children sit on a bed at the Quru Gusik refugee camp in the Kurdish region of northern Iraq, on Aug. 22. Faced with brutal violence and soaring prices, thousands of Syrian Kurds have poured into Iraq's autonomous Kurdish region. UNICEF has reported that over one million Syrian children live as refugees in other countries. Safin Hamed/AFP/Getty Images hide caption

itoggle caption Safin Hamed/AFP/Getty Images