Refugees and migrants try to find a place on an already full train headed for Serbia, near the city of Gevgelija, The Former Yugoslav Republic of Macedonia, on February 24, 2016. Refugees and migrants from Iraq and Syria continue to pass through Macedonia on their way to the European Union. (Photo by Georgi Licovski/EPA)





Two girls wearing raincoats walk in front of tents, as refugees wait to be allowed to cross the the Greek-Macedonian border near the northern Greek village of Idomeni , Wednesday, February 24, 2016. The Greek interior ministry said about 12,000 people have been stranded in Greece since neighbor Macedonia began turning Afghan immigrants away at the border and slowing the number of crossings for others heading to central and northern Europe. (Photo by Petros Giannakouris/AP Photo)





A migrant walks in the mud in a makeshift camp where over 1,000 migrants mostly from Iraqi Kurdistan live in Grand-Synthe, near the northern town of Dunkerque, France, February 24, 2016. The clock is ticking for hundreds of migrants in the nearby port city of Calais waiting for a judge to decide whether to postpone an eviction order in the camp locally referred to as “the jungle”. (Photo by Jerome Delay/AP Photo)





Migrants stand next to a border fence at the Greek-Macedonian border, after additional passage restrictions imposed by Macedonian authorities left hundreds of them stranded near the village of Idomeni, Greece, February 23, 2016. The picture was taken from the Macedonian side of the border. (Photo by Marko Djurica/Reuters)





A migrants rests next to a border fence at the Greek-Macedonian border, after additional passage restrictions imposed by Macedonian authorities left hundreds of them stranded near the village of Idomeni, Greece, February 23, 2016. The picture was taken from the Macedonian side of the border. (Photo by Marko Djurica/Reuters)





Migrants rest next to a border fence at the Greek-Macedonian border, after additional passage restrictions imposed by Macedonian authorities left hundreds of them stranded near the village of Idomeni, Greece, February 23, 2016. The picture was taken from the Macedonian side of the border. (Photo by Marko Djurica/Reuters)





A migrant waits behind a border fence at the Greek-Macedonian border, after additional passage restrictions imposed by Macedonian authorities left hundreds of them stranded near the village of Idomeni, Greece, February 23, 2016. The picture was taken from the Macedonian side of the border. (Photo by Marko Djurica/Reuters)





Macedonian policemen stand in front of a gate over rail tracks as migrants wait behind at the Greek-Macedonian border, after additional passage restrictions imposed by Macedonian authorities left hundreds of them stranded near the village of Idomeni, Greece, February 23, 2016. The picture was taken from the Macedonian side of the border. (Photo by Marko Djurica/Reuters)





Syrian and Iraqi refugees prepare to board a bus heading to the Greek-Macedonian border, following their arrival aboard the Blue Star 1 passenger ship from the islands of Lesbos and Chios, at the port of Piraeus, near Athens, Greece, February 23, 2016. (Photo by Alkis Konstantinidis/Reuters)





A migrant walks past a stencil graffiti with a statue of liberty and the message, “Send the Homless, Tempest tost to me”, in the southern part of a camp for migrants called the “jungle”, in Calais, northern France, February 23, 2016. French authorities have asked migrants living in tents and makeshift shelters in the southern sector of the “jungle”, to evacuate the area. (Photo by Pascal Rossignol/Reuters)





Migrants walk in the mud near a crane operated by volunteers that makes its way along a path in the southern part of a camp for migrants called the “jungle”, in Calais, northern France, February 23, 2016. (Photo by Pascal Rossignol/Reuters)





A migrant child from Afghanistan carries food next to a border fence at the Macedonian-Greek border in Gevgelija, Macedonia February 23, 2016. (Photo by Marko Djurica/Reuters)





Migrants from Afghanistan take a rest on a field next to a border fence at the Macedonian-Greek border in Gevgelija, Macedonia February 23, 2016. (Photo by Marko Djurica/Reuters)





A migrant from Afghanistan feeds her child on a field next to a border fence at the Macedonian-Greek border in Gevgelija, Macedonia February 23, 2016. (Photo by Marko Djurica/Reuters)





Migrants from Syria wait to enter Macedonia next to a border fence at the Macedonian-Greek border in the village of Idomeni, Greece February 23, 2016. (Photo by Marko Djurica/Reuters)





A migrant child shows a snail she found while playing on a field near the town of Polikastro, Greece February 23, 2016. (Photo by Marko Djurica/Reuters)





Migrants sit by a fire near the town of Polikastro, Greece February 23, 2016. (Photo by Marko Djurica/Reuters)





A migrant carries dry branches to set up a fire, near the town of Polikastro, Greece February 23, 2016. (Photo by Marko Djurica/Reuters)





A migrant child walks past a scarf left to dry, near the town of Polikastro, Greece February 23, 2016. (Photo by Marko Djurica/Reuters)





Migrants play with a ball at a petrol station near the town of Polikastro, Greece February 23, 2016. (Photo by Marko Djurica/Reuters)





A migrant takes a rest at a petrol station near the town of Polikastro, Greece February 23, 2016. (Photo by Marko Djurica/Reuters)





Migrants walk past a makeshift Afghan restaurant called “Hamid Karzai” in the southern part of a camp for migrants called the “jungle”, in Calais, northern France, February 23, 2016. (Photo by Pascal Rossignol/Reuters)





People are reflected in a plastic sheeting of a makeshift restaurant in the southern part of a camp for migrants called the “jungle”, in Calais, northern France, February 23, 2016. (Photo by Pascal Rossignol/Reuters)





A migrant woman from Afghanistan stands with her child at the Macedonian-Serbian border near the village of Tabanovce, Macedonia February 24, 2016. (Photo by Marko Djurica/Reuters)





A migrant woman from Afghanistan sits at the Macedonian-Serbian border near the village of Tabanovce, Macedonia February 24, 2016. (Photo by Marko Djurica/Reuters)





Migrants look out from a train near the Macedonian-Greek border in Gevgelija, Macedonia February 24, 2016. (Photo by Marko Djurica/Reuters)





A migrant holding a child cries next to a border fence at the Macedonian-Greek border in Gevgelija, Macedonia February 24, 2016. (Photo by Marko Djurica/Reuters)





A stranded Afghan migrant (L) reacts as another sleeps on Victoria square in Athens, Greece, February 24, 2016. (Photo by Alkis Konstantinidis/Reuters)





A stranded Afghan migrant sleeps on his belongings on Victoria square in Athens, Greece, February 24, 2016. (Photo by Alkis Konstantinidis/Reuters)





Stranded Afghan migrants rest on Victoria square in Athens, Greece, February 24, 2016. (Photo by Alkis Konstantinidis/Reuters)





A migrant holds a child after crossing the Macedonian-Greek border in Gevgelija, Macedonia February 24, 2016. (Photo by Marko Djurica/Reuters)





A migrant carries a child on his shoulders as migrants are returned from a train to a camp near the Macedonian-Greek border in Gevgelija, Macedonia, February 24, 2016. The train was stopped from leaving north after the transit camp on the country's northern border with Serbia filled up with migrants who had been denied entry into Serbia. (Photo by Marko Djurica/Reuters)





A migrant throws blankets from a train window as migrants are returned to a camp near the Macedonian-Greek border in Gevgelija, Macedonia, February 24, 2016. (Photo by Marko Djurica/Reuters)





A refugee boy looks out of a window of a tent covered in raindrops, at the transit center for refugees near the northern Macedonian village of Tabanovce, while he waits with his family for permission to cross the border into Serbia, February 24, 2016. Hundreds of migrants from Afghanistan and other nations remain stranded on borders of Macedonia with Serbia, unable to cross, and some of them forced backward toward Greece. (Photo by Boris Grdanoski/AP Photo)





A man helps another young man in a wheelchair as migrants and refugees board a train after crossing the Greek-Macedonian border, near Gevgelija, on February 24, 2016. Balkan countries along the well-trodden migrant path towards northern Europe met on February 24 to explore ways to stem the flow despite growing fears that tighter controls will spark a humanitarian crisis, particularly in Greece. In the latest such move, Macedonia has closed its frontier to Afghans and introduced more stringent document checks for Syrians and Iraqis seeking to travel to northern and western Europe. The restrictions have caused a bottleneck of thousands of people at the Greek-Macedonian border. (Photo by Robert Atanasovski/AFP Photo)





A children sleeps as refugees wait to be allowed to cross the the Greek-Macedonian border near the northern Greek village of Idomeni , Wednesday, February 24, 2016. The Greek interior ministry said about 12,000 people have been stranded in Greece since neighbor Macedonia began turning Afghan immigrants away at the border and slowing the number of crossings for others heading to central and northern Europe. (Photo by Petros Giannakouris/AP Photo)





Refugees board a train headed for Serbia, near the city of Gevgelia, The Former Yugoslav Republic of Macedonia, on 24 February 2016. Refugees from Iraq and Syria continue to pass through Macedonia on their way to the European Union. (Photo by Georgi Licovski/EPA)