A young Syrian girl wiped her tears after not being allowed entry to Turkey last month. Thousands of Syrians have fled to neighboring countries to escape the civil war raging in their nation. Aris Messinis /AFP/Getty Images hide caption

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One-year-old Hassan was discovered in the rubble of an apartment building in Aleppo, Syria, giving his rescuers a moment of hope on a sad day. His parents were killed by the helicopter strike. Global Post hide caption

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Syrians fleeing increased violence arriving last week at the border between the Syrian town of Azaz and the neighboring Turkish town of Kilis. Phil Moore/AFP/Getty Images hide caption

itoggle caption Phil Moore/AFP/Getty Images