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An explosion rocks Syrian city of Kobani during a reported suicide car bomb attack by the militants of Islamic State group on a People's Protection Unit position in the city center of Kobani, as seen from the outskirts of Suruc, on the Turkey-Syria border, Oct. 20, 2014 in Sanliurfa province, Turkey.
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A Syrian man walks amid destruction in the northern Syrian city of Aleppo on April 10, 2013.
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A man carries a young girl who was injured in a reported barrel-bomb attack by government forces on June 3, 2014, in Kallaseh district in the northern city of Aleppo.
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A displaced Syrian child in a makeshift camp for Syrian refugees only miles from the on Nov. 12, 2013, in Majdal Anjar, Lebanon, only miles from the Syrian border.
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Syrian government troops sit atop a tank as they drive past a damaged building in Mleiha on the outskirts of the capital Damascus on Aug. 15, 2014.
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A Syrian man holds a crying girl as he gestures following an air strike by government forces on the Sahour neighbourhood of the northern Syrian city of Aleppo on March 6, 2014.
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A boy rides his cycles in the streets of the destroyed Syrian town of Kobane, also known as Ain al-Arab, Syria, on June 20, 2015.
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A picture taken on Oct.14, 2014, shows a large explosion allegedly hitting a Syrian army military outpost in the southern part of the city of Maarat al-Numan in the Idlib province.
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Syrian girls, carrying school bags provided by UNICEF, walk past the rubble of destroyed buildings on their way home from school on March 7, 2015, in al-Shaar neighborhood, in the rebel-held side of the northern Syrian city of Aleppo.
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Syrian schoolchildren stand next to a pile of classroom desks as they attend school in the Syrian Kurdish town of Kobane, also known as Ain al-Arab, on March 25, 2015.
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A Syrian Kurdish boy sits on a destroyed tank in the Syrian town of Kobane, also known as Ain al-Arab, on March 27, 2015.
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A man is helping out a baby as refugees from Afghanistan and Syria disembark from in a life boat on the shores of Lesbos near Skala Sikaminias, Greece on Nov. 10, 2015. Lesbos, the Greek vacation island in the Aegean Sea between Turkey and Greece, faces massive refugee flows from the Middle East countries.
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A general view of a make-shift camp set up by mainly Syrian refugees at the Porte de Saint-Ouen in Paris, early on Oct. 2, 2015.
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Lebanese forces walk at a burnt unofficial Syrian refugee camp in the Al-Marj area of Lebanon's eastern Bekaa Valley, after a fire ripped through it on June 1, 2015, killing a baby and injuring several others.
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A sick refugee is pulled while walking and waiting for a chance to cross the Serbian-Croatian border at the refugee camp of Bapska.
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A man rests as he waits with other migrants and refugees at a registration camp after crossing the Greece-Macedonia border near Gevgelija on Nov. 14, 2015.
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Doctors Without Borders staff assist a young girl in a wheelchair as she enters, along with other migrants and refugees, a registration camp after crossing the Greek-Macedonian border near Gevgelija on Nov. 12, 2015.
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A Syrian woman changes her child's diaper as migrants and refugees queue at a camp to register after crossing the Greek-Macedonian border near Gevgelija on Sept. 22, 2015.
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Residents sit in a French class at the "Jungle," a migrant and refugee camp in Calais, on Oct. 30, 2015.
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Syrian migrants and refugees march along the highway toward the Turkish-Greek border at Edirne on Sept. 18, 2015.
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A photo taken on Nov. 5, 2015 shows the "Jungle" migrants camp in Calais.
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A woman stands at the entrance of a tent in a makeshift camp in Grande-Synthe, France, on Oct. 20, 2015.
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Syrian refugee kids, fled from their homes due to civil war in their homeland, play in Yayladagi YIBO camp in Hatay province of Turkey, on Oct. 25, 2015.
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A photo taken on Nov. 12, 2015, shows a view of part of the "New Jungle" migrant camp in Calais.