[caption id="attachment_43559" align="aligncenter" width="600"]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.[/ caption][caption id = " attachment _ 43558 " align = " aligncenter " width = " 600 "]Men search for their relatives among the bodies of Syrian civilians executed and dumped in the Quweiq river, in the grounds of the courtyard of the Yarmouk School, in the Bustan al - Qasr district of Aleppo on Jan. 30,2013.[/ caption][caption id = " attachment _ 43557 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43556 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43555 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43554 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43553 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43552 " align = " aligncenter " width = " 600 "]Syrian children search for their belongings at a school following airstrikes by Syrian government forces on Dec. 22,2013, in the northern Syrian city of Marea on the outskirts of Aleppo.[/ caption][caption id = " attachment _ 43551 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43549 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43548 " align = " aligncenter " width = " 600 "]A Syrian man walks amid destruction in the northern Syrian city of Aleppo on April 10,2013.[/ caption][caption id = " attachment _ 43547 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43546 " align = " aligncenter " width = " 600 "]Migrants walk through a mud path of the " New Jungle " migrant camp in Calais, where thousands of refugees live with the hope of crossing the Channel to the U. K., on Oct. 21,2015.[/ caption][caption id = " attachment _ 43545 " align = " aligncenter " width = " 600 "]A photo taken on Nov. 12,2015, shows a view of part of the " New Jungle " migrant camp in Calais.[/ caption][caption id = " attachment _ 43544 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43543 " align = " aligncenter " width = " 600 "]A woman stands at the entrance of a tent in a makeshift camp in Grande - Synthe, France, on Oct. 20,2015.[/ caption][caption id = " attachment _ 43542 " align = " aligncenter " width = " 600 "]A photo taken on Nov. 5,2015 shows the " Jungle " migrants camp in Calais.[/ caption][caption id = " attachment _ 43541 " align = " aligncenter " width = " 600 "]Syrian migrants and refugees march along the highway toward the Turkish - Greek border at Edirne on Sept. 18,2015.[/ caption][caption id = " attachment _ 43540 " align = " aligncenter " width = " 600 "]Residents sit in a French class at the " Jungle, " a migrant and refugee camp in Calais, on Oct. 30,2015.[/ caption][caption id = " attachment _ 43539 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43538 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43537 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43536 " align = " aligncenter " width = " 600 "]A sick refugee is pulled while walking and waiting for a chance to cross the Serbian - Croatian border at the refugee camp of Bapska.[/ caption][caption id = " attachment _ 43535 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43534 " align = " aligncenter " width = " 600 "]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.[/ caption][caption id = " attachment _ 43533 " align = " aligncenter " width = " 600 "] 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. [/caption]