A child traveling with other asylum-seekers waits for a train to leave for the Hungarian border with Austria at Keleti train station in Budapest, Hungary, Sunday, September 6, 2015. Over 150,000 people seeking to enter Europe have reached Hungary this year, most coming through the southern border with Serbia, and many apply for asylum but quickly try to leave for wealthier EU countries. (Photo by Frank Augstein/AP Photo)





A boy sits in a bus, which is supposed to leave to Austria and Germany, at the Keleti trainstation in Budapest, Hungary, September 4, 2015. (Photo by Bernadett Szabo/Reuters)





A girl sits in a bus, which is supposed to leave to Austria and Germany, at the Keleti trainstation in Budapest, Hungary, September 4, 2015. (Photo by Bernadett Szabo/Reuters)





A girl makes soap bubbles in an underground station at the Keleti trainstation in Budapest, Hungary, September 4, 2015. (Photo by Bernadett Szabo/Reuters)





A migrant boy looks out from a bus bound for Austria and Germany, next to the Keleti train station in Budapest, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





Migrants sit at the Austrian-Hungarian border station of Hegyeshalom, Hungary, September 5, 2015. (Photo by Heinz-Peter Bader/Reuters)





Migrants arrive at the Austrian train station of Nickelsdorf to board a train to Germany, September 5, 2015. (Photo by Heinz-Peter Bader/Reuters)





Migrants wait for buses after crossing Austrian border in Nickelsdorf, September 5, 2015. (Photo by Laszlo Balogh/Reuters)





Migrants wait for buses after crossing Austrian border in Nickelsdorf, September 5, 2015. (Photo by Laszlo Balogh/Reuters)





Migrants arrive at the Austrian train station of Nickelsdorf to board a train to Germany, September 5, 2015. (Photo by Heinz-Peter Bader/Reuters)





Austrian Police helps migrants as they arrive at the train station of Nickelsdorf, Austria to board a train to Germany, September 5, 2015. (Photo by Heinz-Peter Bader/Reuters)





Migrants wait for buses after crossing Austrian border in Nickelsdorf, September 5, 2015. (Photo by Laszlo Balogh/Reuters)





A boy grabs a piece of bread as he arrives at the Austrian train station of Nickelsdorf to board a train to Germany, September 5, 2015. (Photo by Heinz-Peter Bader/Reuters)





Migrants arrive at the Austrian train station of Nickelsdorf to board a train to Germany, September 5, 2015. (Photo by Heinz-Peter Bader/Reuters)





A young girl cries as migrants disembark from a train at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)





Food and water is distributed to migrents as they disembark from a train at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)





Migrants disembark from a train at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)





Clothing is distributed to migrants after they disembarked from a train at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)





A young child eats bread as clothing is distributed to migrants on their arrival at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)





A young child bites into a banana as migrants rest on the platform after arriving at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)





A young migrant child eats a banana after arriving at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)





A young migrant child plays with a European Union flag after crossing the Austrian border in Nickelsdorf September 5, 2015. (Photo by Laszlo Balogh/Reuters)





A young child eats a banana as migrants wait for buses after crossing Austrian border in Nickelsdorf September 5, 2015. (Photo by Laszlo Balogh/Reuters)





Migrants board a train at the railway station in Nickelsdorf, Austria September 5, 2015. (Photo by Srdjan Zivulovic/Reuters)





Migrants wait at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)





A migrant girl stands with her teddy bear at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)





A migrant girl stands with her teddy bear at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)





A woman gives sweets to migrants' children at a railway station in Vienna, Austria September 5, 2015. (Photo by Dominic Ebenbichler/Reuters)




A young migrant rests while waiting for a train at the railway station in Nickelsdorf, Austria September 5, 2015. (Photo by Srdjan Zivulovic/Reuters)





A woman offers candies to children of migrants at a railway station in Munich, Germany September 5, 2015. (Photo by Lukas Barth/Reuters)





A migrant carries a child as they wait to board a train after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 5, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant girl looks on as she waits to board a train after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 5, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant family tries to cross the Macedonian-Greek border near Gevgelija, Macedonia, as a Greek policeman looks at them, September 5, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant girl looks on next to a policeman as she waits to board a train after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 5, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant boy receives a pack of juice from a Macedonian soldier after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 5, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant boy adjusts his sock as he waits to cross the Macedonian-Greek border near Gevgelija, Macedonia, September 5, 2015. (Photo by Stoyan Nenov/Reuters)





Migrant children look on as they wait to board a train after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 5, 2015. (Photo by Stoyan Nenov/Reuters)





A young migrant boy tries on a Bahn security officer's cap after arriving with the first “special” train from Salzberg, before boarding a regional S-Bahn train, at the main station in Munich, Germany September 5, 2015. (Photo by Michael Dalder/Reuters)





Police officers stand guard as migrants line-up to board trains at the railway station in Nickelsdorf, Austria September 5, 2015. (Photo by Srdjan Zivulovic/Reuters)





A young girls holds a teddy bear she received at the registration point for migrant arrivals at the main station in Munich, Germany September 5, 2015. (Photo by Michael Dalder/Reuters)





Migrant children walk down the street from Keleti train station in Budapest, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





A migrant women holds her child as she walks down the street from Keleti train station in Budapest, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





Migrants walk down the street from Keleti train station in Budapest, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





A young girls holds a teddy bear she received at the registration point for migrant arrivals at the main station in Munich, Germany September 5, 2015. (Photo by Michael Dalder/Reuters)





A young boy plays with a teddy bear he received at the registration point for migrant arrivals at the main station in Munich, Germany September 5, 2015. (Photo by Michael Dalder/Reuters)





A migrant woman carries a boy as they wait to board a bus, following their arrival onboard the Eleftherios Venizelos passenger ship at the port of Piraeus, near Athens, Greece September 5, 2015. (Photo by Alkis Konstantinidis/Reuters)





A migrant holds a child as he walks down a street from Keleti train station in Budapest, Hungary, September 5, 2015. (Photo by David W. Cerny/Reuters)





A migrant holds a child as he walks down a street from Keleti train station in Budapest, Hungary, September 5, 2015. (Photo by David W. Cerny/Reuters)





Migrants look out from a train at the railway station in Nickelsdorf, Austria September 5, 2015. (Photo by Srdjan Zivulovic/Reuters)





A daughter of a migrant stands in a queue after arriving to the main railway station in Munich, Germany September 5, 2015. (Photo by Michael Dalder/Reuters)





Migrants walk along a train after arriving to the main railway station in Munich, Germany September 5, 2015. (Photo by Michael Dalder/Reuters)





Migrants wait in a queue after arriving by train to the main railway station in Munich, Germany September 5, 2015. (Photo by Michael Dalder/Reuters)





A boy sits in a wheelchair as migrants wait to cross the border with Austria near the town of Hegyeshalom, Hungary, September 5, 2015. (Photo by Srdjan Zivulovic/Reuters)





Migrants wait to cross the border with Austria near the town of Hegyeshalom, Hungary, September 5, 2015. (Photo by Srdjan Zivulovic/Reuters)





A migrant child plays with a ball at Keleti train station in Budapest, Hungary, September 5, 2015. (Photo by David W. Cerny/Reuters)





Migrant children look out through the window of a train at Keleti train station in Budapest, Hungary, September 5, 2015. (Photo by David W. Cerny/Reuters)





A migrant girl reacts waiting for a train to Hegyeshalom at the railway station in the town of Gyor, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





A helper plays with migrant children in Nickeldorf, Austria, at the border with Hungary, September 5, 2015. (Photo by Srdjan Zivulovic/Reuters)





Syrian migrant children sit in a train en route to Hegyeshalom from the railway station in the town of Gyor, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





A migrant girl plays in the Keleti subway station after most migrants have left for buses bound for Austria and Germany, in Budapest, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





A Syrian migrant boy sits in a train en route to Hegyeshalom from the railway station in the town of Gyor, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





A migrant from Syria cries as she stands with her children on a field after crossing into Hungary from the border with Serbia near the village of Roszke, September 5, 2015. (Photo by Marko Djurica/Reuters)





A migrant girl reacts as she waits with her parents to enter a camp for registration procedures after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 5, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant from Syria holds a baby on a field after crossing into Hungary from the border with Serbia near the village of Roszke, September 5, 2015. (Photo by Marko Djurica/Reuters)





A migrant woman sits with her baby aboard a train to Vienna at the railway station in the town of Hegyeshalom, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





A migrant from Syria plays with a child on a field after crossing into Hungary from the border with Serbia near the village of Roszke, September 5, 2015. (Photo by Marko Djurica/Reuters)





A migrant from Syria carries a child on his shoulders after crossing into Hungary from the border with Serbia near the village of Roszke, September 5, 2015. (Photo by Marko Djurica/Reuters)





Migrants from Syria wait for a bus after crossing into Hungary from the border with Serbia on a field near the village of Roszke, September 5, 2015. (Photo by Marko Djurica/Reuters)





A migrant girl carries a child after crossing into Hungary from the border with Serbia on a field near the village of Roszke, September 5, 2015. (Photo by Marko Djurica/Reuters)





A migrant from Syria holds a child as they wait for a bus after crossing into Hungary from the border with Serbia on a field near the village of Roszke, September 5, 2015. (Photo by Marko Djurica/Reuters)





Migrants from Syria wait for a bus after crossing into Hungary from the border with Serbia on a field near the village of Roszke, September 5, 2015. (Photo by Marko Djurica/Reuters)





A migrant from Syria holds a child as they wait for a bus after crossing into Hungary from the border with Serbia on a field near the village of Roszke, September 5, 2015. (Photo by Marko Djurica/Reuters)





Children from Syria eat raw corn after crossing into Hungary from the border with Serbia on a field near the village of Roszke, September 5, 2015. (Photo by Marko Djurica/Reuters)





A migrant boy sits aboard a train to Vienna departed from the railway station in the town of Hegyeshalom, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





A migrant boy sleeps aboard a train to Vienna departed from the railway station in the town of Hegyeshalom, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





A migrant boy smiles aboard a train to Vienna departed from the railway station in the town of Hegyeshalom, Hungary, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





Mehiar, an 11-years-old Kurdish boy from Kobani, makes soap bubbles aboard a train from Hegyeshalom, at the railway station in Vienna, Austria, September 5, 2015. (Photo by Leonhard Foeger/Reuters)





Two Syrian children laugh as they cuddle a stuffed toy given by wellwishers after they arrived with a train from Budapest's Keleti station at the railway station of the airport in Frankfurt, Germany, early morning September 6, 2015. (Photo by Kai Pfaffenbach/Reuters)





Two children of a Syrian family sleep on a platform after they arrived on a train from Budapest's Keleti station at the railway station of the airport in Frankfurt, Germany, early morning September 6, 2015. (Photo by Kai Pfaffenbach/Reuters)





An exhausted Syrian boy cries after he arrived with his family on a train from Budapest's Keleti station at the railway station of the airport in Frankfurt, Germany, early morning September 6, 2015. (Photo by Kai Pfaffenbach/Reuters)





Syrian children stand on a platform after they disembarked a train that departed from Budapest's Keleti station with their families at the railway station of the airport in Frankfurt, Germany, early morning September 6, 2015. (Photo by Kai Pfaffenbach/Reuters)





A Syrian boy holds a bunch of balloons given by wellwishers as he stands on an escalator while waiting for his registration after arriving with his family by train from Budapest's Keleti station at the railway station of the airport in Frankfurt, Germany, early morning September 6, 2015. (Photo by Kai Pfaffenbach/Reuters)





A child from Syria sits on a field while waiting to be transported to a reception camp near the village of Roszke, Hungary September 6, 2015. (Photo by Marko Djurica/Reuters)





A child from Syria cries at a gas station while waiting to be transported to a reception camp near the village of Roszke, Hungary September 6, 2015. (Photo by Marko Djurica/Reuters)





A Greek coast guard officer carries an Afghan refugee girl away from scuffles between Greek police and Afghan refugees that protested over priority for a registration procedure at the port of Mytilene on the Greek island of Lesbos, September 6, 2015. (Photo by Dimitris Michalakis/Reuters)





A young migrant girl enjoys a lollypop after arriving at a railway station in Vienna, Austria September 6, 2015. (Photo by Dominic Ebenbichler/Reuters)





A migrant girl sleeps close to the borders of Greece with Macedonia, near the village of Idomeni, September 6, 2015. (Photo by Alexandros Avramidis/Reuters)





Migrants are welcomed as they arrive at the main railway station in Dortmund, Germany September 6, 2015. (Photo by Ina Fassbender/Reuters)





Young migrant boys smile as they arrive at the main railway station in Dortmund, Germany September 6, 2015. (Photo by Ina Fassbender/Reuters)





Migrant children from Syria give thumbs-up as they arrive at the main railway station in Dortmund, Germany September 6, 2015. (Photo by Ina Fassbender/Reuters)





A migrant boy gives thumbs-up in a registration centre at the main railway station in Dortmund, Germany September 6, 2015. (Photo by Ina Fassbender/Reuters)





Migrants walk to a registration centre after their arrival at the main railway station in Dortmund, Germany September 6, 2015. (Photo by Ina Fassbender/Reuters)





Migrants arrive at the main railway station in Dortmund, Germany September 6, 2015. (Photo by Ina Fassbender/Reuters)





Migrants walk on a dirt road after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 6, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant child poses for a picture shortly after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 6, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant boy smiles after boarding a train after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 6, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant child poses for a picture shortly after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 6, 2015. (Photo by Stoyan Nenov/Reuters)





Migrant children react while being photographed as they wait to enter a camp for registration procedure after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 6, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant child poses for a picture shortly after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 6, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant child smiles as his family waits to board a train after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 6, 2015. (Photo by Stoyan Nenov/Reuters)





Migrants walk on a dirt road after crossing the Macedonian-Greek border near Gevgelija, Macedonia, September 6, 2015. (Photo by Stoyan Nenov/Reuters)





A migrant child plays with a doll at Keleti railway station in Budapest, Hungary, September 6, 2015. After days of confrontation and chaos, Hungary deployed more than 100 buses overnight to take thousands of the migrants who had streamed there from southeast Europe to the Austrian frontier. Austria said it had agreed with Germany to allow the migrants access, waiving the asylum rules. (Photo by David W. Cerny/Reuters)





Migrant children play with bubbles at Keleti railway station in Budapest, Hungary, September 6, 2015. (Photo by David W. Cerny/Reuters)





A volunteer gives a balloon to a migrant child at the railway station in Nickelsdorf, Austria September 6, 2015. (Photo by Leonhard Foeger/Reuters)





A volunteer distrubutes food to migrants at the railway station in Nickelsdorf, Austria September 6, 2015. (Photo by Leonhard Foeger/Reuters)





A young girl plays with a balloon as migrants board a train at the railway station in Nickelsdorf, Austria September 6, 2015. (Photo by Leonhard Foeger/Reuters)





A migrant child walks after arriving by train to the main railway station in Munich, Germany September 6, 2015. Austria and Germany threw open their borders to thousands of exhausted migrants on Saturday, bussed to the Hungarian border by a right-wing government that had tried to stop them but was overwhelmed by the sheer numbers reaching Europe's frontiers. (Photo by Michael Dalder/Reuters)





Firefighters chat with migrants who arrived by train to the main railway station in Munich, Germany September 6, 2015. (Photo by Michael Dalder/Reuters)





A migrant child walks after arriving by train to the main railway station in Munich, Germany September 6, 2015. (Photo by Michael Dalder/Reuters)





A migrant boy sits on a rail as a group of migrants arrive to a collection point in the village of Roszke, Hungary, September 6, 2015, after crossing the border from Serbia. (Photo by Laszlo Balogh/Reuters)





Young girls looks through a fence from inside a new reception camp for migrants near the village of Roszke, Hungary September 6, 2015. Hungary is the main entry point into Europe's borderless Schengen zone for migrants. (Photo by Laszlo Balogh/Reuters)





A migrant carries his child as they arrive to a collection point in the village of Roszke, Hungary, September 6, 2015, after crossing the border from Serbia. (Photo by Laszlo Balogh/Reuters)





A girl stands in a reception centre after her arrival with a train in Dortmund, Germany September 6, 2015. (Photo by Ina Fassbender/Reuters)





A child sits among clothes at a distribution centre with donated articles for daily use after arriving with a train in Dortmund, Germany September 6, 2015. (Photo by Ina Fassbender/Reuters)





A police officer stands next to a van crowded with migrants on the highway near Gyor, Hungary, September 6, 2015. (Photo by David W. Cerny/Reuters)





Young migrants gesture during a day of solidarity organised by local organizations and resdients for asylum seekers at a makeshift camp outside the foreign office in Brussels, Belgium September 6, 2015. (Photo by Yves Herman/Reuters)