Refugees sleep at the train station in Flensburg, Germany, 10 September 2015. A first train with refugees left in the morning from Flensburg towards Denmark. About 100 migrants spent the night at Flensburg's train station. Denmark would resume international rail services to Germany on 10 September, the Danish railway company DSB said, the day after trains were halted in an attempt to come to terms with an influx of migrants. Trains between Flensburg in Germany and Padborg in southern Denmark would resume, as well as the intercity service between Flensburg and the Danish capital Copenhagen. Germany and Sweden have been among the top destinations for those seeking to file asylum applications, while Denmark has in recent years introduced tougher restrictions. (Photo by Christian Charisius/EPA)





A volunteer helps a migrant child to jump over a fence at Keleti station in Budapest, Hungary September 10, 2015. (Photo by Bernadett Szabo/Reuters)





A migrant baby reacts as others queue to board a train at Keleti station in Budapest, Hungary September 10, 2015. (Photo by Bernadett Szabo/Reuters)





A migrant girl cries as she waits at Keleti station in Budapest, Hungary September 10, 2015. Austrian railway company OeBB said on Thursday it had suspended all train traffic heading to Hungary due to "massive overburdening" after days during which thousands of migrants have transited the two countries on their way to Germany. “The OeBB must temporarily suspend trains heading to Hungary because of massive overburdening from trains arriving from Hungary”, the train operator said in a statement on its website. (Photo by Bernadett Szabo/Reuters)





The police tries to maintain order at the Keleti station in Budapest, Hungary September 10, 2015. (Photo by Bernadett Szabo/Reuters)





A migrant woman comforts a child as they wait for a train at Keleti railway station in Budapest, Hungary September 10, 2015. (Photo by Bernadett Szabo/Reuters)





The police tries to maintain order at the Keleti station in Budapest, Hungary September 10, 2015. (Photo by Bernadett Szabo/Reuters)




A migrant talks to a policeman at the Wien Westbahnhof in Vienna, Austria September 10, 2015. (Photo by Heinz-Peter Bader/Reuters)





Migrants wait for trains at the Wien Westbahnhof in Vienna, Austria September 10, 2015. About 3,700 people poured across the Hungarian border into Austria on Thursday, a police spokesman said, a big increase in the flow of migrants that will put extra pressure on Austrian authorities trying to arrange onward transport to Germany. (Photo by Heinz-Peter Bader/Reuters)





Migrants wait for trains at the Wien Westbahnhof in Vienna, Austria September 10, 2015. (Photo by Heinz-Peter Bader/Reuters)





Afghan refugees rest in a park in central Athens after arriving on passenger ships from Lesbos island at the port of Piraeus, Greece, September 10, 2015. Most of the people flooding into Europe are refugees fleeing violence and persecution in their home countries who have a legal right to seek asylum, the United Nations said on Tuesday. (Photo by Michalis Karagiannis/Reuters)





A migrant girl sleeps on a park bench in central Athens after arriving on a passenger ship to the port of Piraeus from Lesbos island, September 10, 2015. (Photo by Michalis Karagiannis/Reuters)





A group of migrants try to go through police blockades after entering Gevgelija, in Macedonia, after crossing the border from Greece September 10, 2015. Macedonia is considering building a Hungarian-style border fence to stem a rising influx of migrants from the south, Foreign Minister Nikola Poposki was quoted as saying on Thursday. (Photo by Tomislav Georgiev/Reuters)





A woman struggles with a child's stroller as a group of immigrants try to pass through police blockades in Gevgelija, Macedonia September 10, 2015. (Photo by Tomislav Georgiev/Reuters)





A woman collapses in the crowd, as a group of migrants try to pass police blockades in Gevgelija, Macedonia September 10, 2015. (Photo by Tomislav Georgiev/Reuters)





A boy is seen through a police shield as a group of migrants try to pass through police blockades in Gevgelija, Macedonia September 10, 2015. (Photo by Tomislav Georgiev/Reuters)





A man jumps down from a bridge, as he and other migrants try to pass police blockades in Gevgelija, Macedonia September 10, 2015. (Photo by Tomislav Georgiev/Reuters)





A Syrian refugee woman begs a Macedonian soldier to allow members of her family to cross to her side at Greece's border with Macedonia, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A Syrian refugee girl cries as she walks through a rainstorm towards Greece's border with Macedonia, near the Greek village of Idomeni, September 10, 2015. Most of the people flooding into Europe are refes fleeing violence and persecution in their home countries who have a legal right to seek asylum, the United Nations said on Tuesday. (Photo by Yannis Behrakis/Reuters)





Syrian refugees walk through the mud as they cross the border from Greece into Macedonia, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





Syrian refugees carry a sick relative through the mud as they cross the border from Greece into Macedonia, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A Syrian refugee carries his child through the mud as they cross the border from Greece into Macedonia during a rainstorm, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





Syrian refugees carry a sick man as they walk through the mud to cross the border from Greece into Macedonia during a rainstorm, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A Syrian refugee carries her baby as she walks through the mud to cross the border from Greece into Macedonia during a rainstorm, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





An armed Macedonian soldier (R) stands in front of migrants and refugees in an attempt to control a crowd waiting to cross the border line from Greece into Macedonia, during a rainstorm near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A Syrian refugee tries to protect his sisters as they walk through the mud to cross the border from Greece into Macedonia, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





Armed Macedonian soldiers stand in front of migrants and refugees in an attempt to control a crowd waiting to cross the border line from Greece into Macedonia, during a rainstorm near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





Syrian refugees walk through the mud as they cross the border from Greece into Macedonia, during a rainstorm near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A Syrian refugee carries her baby as she walks through the mud to cross the border from Greece into Macedonia during a rainstorm, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





Migrants and refugees beg Macedonian soldiers to allow passage to cross the border from Greece into Macedonia during a rainstorm, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A Syrian refugee cries as she carries her baby walking through the mud to cross the border from Greece into Macedonia during a rainstorm, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





Macedonian police try to keep migrants and refugees under control before they cross the border line from Greece into Macedonia, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





Macedonian police try to keep migrants and refugees under control before they cross the border line from Greece into Macedonia, during a raistorm near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A Syrian refugee girl and her brother try to escape from an armed Macedonian policeman as they try to cross the border from Greece into Macedonia, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A Syrian refugee carries a child as he walks through the mud to cross the border from Greece into Macedonia during a rainstorm, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A Syrian refugee walks by a deserted camp at the border of Greece and Macedonia during a rainstorm, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





The border crossing of Greece to Macedonia is littered with possessions left behind by migrants and refugees after a rainstorm, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





Stuffed animals are seen amongst possessions left behind by migrants and refugees after a rainstorm at the border crossing between Greece and Macedonia, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A Syrian refugee screams at others to wait for him as he carries his daughter through a rainstorm towards Greece's border with Macedonia, near the Greek village of Idomeni, September 10, 2015. (Photo by Yannis Behrakis/Reuters)





A child cries as migrants and refugees wait to cross the Greek-Macedonian border near the village of Idomeni, in northern Greece on September 10, 2015. More than 10 thousands refugees and migrants arrived in Piraeus from the overcrowded Greek islands, especially the island of Lesbos , in the last 24 hours. (Photo by Sakis Mitrolidis/AFP Photo)





Migrants and refugees clashes with police at the Greek-Macedonian border near the village of Idomeni, in northern Greece on September 10, 2015. (Photo by Sakis Mitrolidis/AFP Photo)





Migrants and refugees wait under the rain to cross the Greek-Macedonian border near the village of Idomeni, in northern Greece on September 10, 2015. (Photo by Sakis Mitrolidis/AFP Photo)





Migrants and refugees wait to cross the Greek-Macedonian border near the village of Idomeni, in northern Greece on September 10, 2015. (Photo by Sakis Mitrolidis/AFP Photo)





Migrants try to break through the cordon of Macedonian police forces, while waiting to board a bus after crossing the Macedonian-Greek border near Gevgelija on September 10, 2015. (Photo by Robert Atanasovski/AFP Photo)





Migrants and refugees wait in the mud and under the rain to cross the Greek-Macedonian border near the village of Idomeni, in northern Greece on September 10, 2015. (Photo by Sakis Mitrolidis/AFP Photo)





A migrant child looks out of the bus window in the village of Miratovac near the southern Serbian town of Presevo on September 10, 2015. A record 5,000 migrants have arrived at Serbia's border with Hungary over the past 24 hours, a television report said on September 10. Some 3,000 of them have already entered into Hungary, the state RTS television said. Most of the migrants are moving through Hungary on their way to Germany and other northern countries where they hope to win asylum. The EU unveiled plans to take 160,000 refugees from overstretched border states, as the United States said it would accept more Syrians to ease the pressure from the worst migration crisis since World War II. (Photo by Armend Nimani/AFP Photo)





A woman cries as she crawls through the border police block in the southern Macedonian town of Gevgelija, Thursday, September 10, 2015. Hundred of thousands migrants and refugees trying to reach the heart of Europe via Turkey, Greece, the Balkans and Hungary have faced dangers, difficulties and delays on every link of the journey. (Photo by Borce Popovski/AP Photo)





Migrants enter Hungary from Serbia at the temporary border fence under construction near the border village of Roszke, 180 kms southeast of Budapest, Hungary, early Thursday, September 10, 2015. (Photo by Sandor Ujvari/MTI via AP Photo)





Migrants wait for a bus in Nickelsdorf, Austria, at the border between Hungary and Austria, Thursday, September 10, 2015. Austrian police say more than 3,000 migrants crossed into Austria overnight at Nickelsdorf, the main border point with Hungary. They say a train carrying up to 500 migrants left for Vienna early Thursday but most remain at Nickelsdorf. (Photo by Ronald Zak/AP Photo)





A woman holds a girl as she passes the border from the northern Greek village of Idomeni to southern Macedonia, Thursday, September 10, 2015. Thousands of people, including many families with young children, braved torrential downpours to cross Greece's northern border with Macedonia early Thursday, after Greek authorities managed to register about 17,000 people on the island of Lesbos in the space of a few days, allowing them to continue their journey north into Europe. (Photo by Giannis Papanikos/AP Photo)





A boy passes from the northern Greek village of Idomeni to southern Macedonia as other refugees and migrants wait, Thursday, September 10, 2015. (Photo by Giannis Papanikos/AP Photo)





A young boy standing with his mother waits in a queue for a bus that will take them to the center for asylum seekers near Roszke, southern Hungary in Roszke, Thursday, September 10, 2015. Leaders of the United Nations refugee agency warned Tuesday that Hungary faces a bigger wave of 42,000 asylum seekers in the next 10 days and will need international help to provide shelter on its border. (Photo by Matthias Schrader/AP Photo)





A girl cries as refugees and migrants try to cross the borders in heavy rainfall from the northern Greek village of Idomeni to southern Macedonia, Thursday, September 10, 2015. Thousands of people, including many families with young children, braved torrential downpours to cross Greece's northern border with Macedonia early Thursday, after Greek authorities managed to register about 17,000 people on the island of Lesbos in the space of a few days, allowing them to continue their journey north into Europe. (Photo by Giannis Papanikos/AP Photo)





A refugee sleeps with her children on a ferry traveling from the northeastern Greek island of Lesbos to the Athens' port of Piraeus. Greece's caretaker government chartered two extra ferries and sent additional staff to Lesbos to speed up the registration and ease overcrowding on the island, where more than 20,000 refugees and migrants had been living in precarious conditions after arriving on dinghies from the nearby Turkish coast. (Photo by Santi Palacios/AP Photo)





A refugee wrapped in a thermal blanket looks at a dinghy full of migrants and refugees approach the coast of Lesbos island, Greece, Wednesday, September 9, 2015. The head of the European Union's executive says 22 of the member states should be forced to accept another 120,000 people in need of international protection who have come toward the continent at high risk through Greece, Italy and Hungary. (Photo by Petros Giannakouris/AP Photo)