A migrant is seen in silhouette as smoke fills the sky from burning makeshift shelters in the "Jungle" on the third day of their evacuation and transfer to reception centers in France, as part of the dismantlement of the camp in Calais, France, October 26, 2016. REUTERS/Pascal Rossignol

A bicycle is seen in the charred debris from fires overnight that destroyed makeshift shelters and tents in the "Jungle" on the third day of their evacuation and transfer to reception centers in France, as part of the dismantlement of the camp in Calais, France, October 26, 2016. REUTERS/Neil Hall

A migrant is seen in silhouette near flames from a burning makeshift shelter on the second day of the evacuation of migrants and their transfer to reception centers in France, as part of the dismantlement of the camp called the "Jungle" in Calais, France, October 25, 2016. REUTERS/Neil Hall TPX IMAGES OF THE DAY

French firemen extinguish fires from burning debris on the second day of the evacuation and dismantlement of the camp called the "Jungle" in Calais, France, October 25, 2016. REUTERS/Philippe Wojazer

French firemen extinguish flames on the second day of the evacuation of migrants and their transfer to reception centers in France, as part of the dismantlement of the camp called the "Jungle" in Calais, France, October 25, 2016. REUTERS/Neil Hall

A coloured bracelet is placed on the wrist of a migrant on the second day of their evacuation and transfer to reception centers in France, during the dismantlement of the camp called the "Jungle" in Calais, France, October 25, 2016. REUTERS/Philippe Wojazer

Migrants sit near a fire for warmth at the end of the first day of the evacuation and transfer to reception centers of migrants living in the "Jungle" in Calais, France, October 24, 2016. REUTERS/Philippe Wojazer 

Sparks fly from a fire as migrants sit near for warmth at the end of the first day of the evacuation and transfer to reception centers of migrants living in the "Jungle" in Calais, France, October 24, 2016. REUTERS/Philippe Wojazer TPX IMAGES OF THE DAY

Sparks fly from a fire as migrants sit near for warmth at the end of the first day of the evacuation and transfer to reception centers of migrants living in the "Jungle" in Calais, France, October 24, 2016. REUTERS/Philippe Wojazer

Sparks fly from a fire as migrants sit near for warmth at the end of the first day of the evacuation and transfer to reception centers of migrants living in the "Jungle" in Calais, France, October 24, 2016. REUTERS/Philippe Wojazer

Flames from burning rubbish are seen in the jungle on the eve of the evacuation and transfer of migrants to reception centers in France, and the dismantlement of the camp called the "Jungle" in Calais, France, October 23, 2016. REUTERS/Pascal Rossignol

A Haitian migrants sleeps on a street after leaving Brazil, where they sought refuge after Haiti's 2010 earthquake, but are now attempting to enter the U.S., in Tijuana, Mexico, October 3, 2016. Picture taken October 3, 2016. REUTERS/Edgard Garrido 

Afghan adolescent migrants and their belongings are seen as they leave the emergency shelter for minors in Saint Omer, France, to travel to Britain October 18, 2016. REUTERS/Pascal Rossignol 

Sticks that migrants use to remain seated in the bed of pickup trucks are stacked at a compound used to lodge migrants in transit in Agadez, Niger, May 7, 2016. Picture taken May 7, 2016. To match Analysis EUROPE-MIGRANTS/AFRICA REUTERS/Joe Penney 

Thousands of lifejackets left by migrants and refugees are piled up at a garbage dump site near the town of Mithymna (also known as Molyvos) on the island of Lesbos, Greece, October 5, 2016. REUTERS/Alkis Konstantinidis 

A migrant sits in the yard of San Antonio church in Ventimiglia, Italy, October 3, 2016. Picture taken October 3, 2016. REUTERS/Eric Gaillard 

The sun rises along the Hungary and Serbia border fence near the village of Asotthalom, Hungary, October 2, 2016 as Hungarians vote in a referendum on the European Union's migrant quotas. REUTERS/Laszlo Balogh

A Turkish military watchtower is seen through the barbed wire of a fence in Orestiada, Greece, February 6, 2012. REUTERS/Vassilis Ververidis/Motion Team/File Photo 

A ground anchor for a fence is seen at the Austrian-Hungarian border near Nickelsdorf, Austria, September 19, 2016. REUTERS/Leonhard Foeger 

A barbed wire is seen at the Austrian-Hungarian border near Nickelsdorf, Austria, September 19, 2016. REUTERS/Leonhard Foeger 

Ground anchors for a fence are seen at the Austrian-Hungarian border near Nickelsdorf, Austria, September 19, 2016. REUTERS/Leonhard Foeger 

A barbed wire is seen at the Austrian-Hungarian border near Nickelsdorf, Austria, September 19, 2016. REUTERS/Leonhard Foeger 

Police and army units patrol the Hungary-Serbia border at Asotthalom, Hungary, September 1, 2016. Picture taken September 1, 2016. To match Analysis EUROPE-MIGRANTS/HUNGARY-REFERENDUM REUTERS/Laszlo Balogh

The Sun rises at the Hungary-Serbia border fence at Asotthalom, Hungary, September 2, 2016. Picture taken September 2, 2016. To match Analysis EUROPE-MIGRANTS/HUNGARY-REFERENDUM REUTERS/Laszlo Balogh 

Police and army units patrol as the sun rises at the Hungary-Serbia border fence at Asotthalom, Hungary, September 1, 2016. Picture taken September 1, 2016. To match Analysis EUROPE-MIGRANTS/HUNGARY-REFERENDUM REUTERS/Laszlo Balogh

The shape of a man is set in wire into the Hungary-Serbia border fence at Asotthalom, Hungary, September 2, 2016. Picture taken September 2, 2016. To match Analysis EUROPE-MIGRANTS/HUNGARY-REFERENDUM REUTERS/Laszlo Balogh

A Bulgarian border policeman monitors near the barbed wire fence constructed on the Bulgarian-Turkish border, near Lesovo, Bulgaria September 14, 2016. REUTERS/Stoyan Nenov 

A Turkish solder is pictured as he stands guard near the barbed wire fence constructed on the Bulgarian-Turkish border, near Lesovo, Bulgaria September 14, 2016. REUTERS/Stoyan Nenov 

Bulgarian border policemen walk near the barbed wire fence constructed on the Bulgarian-Turkish border, near Lesovo, Bulgaria September 14, 2016. REUTERS/Stoyan Nenov 

A makeshift bathroom is seen at a camp at the border between Costa Rica and Nicaragua, in Penas Blancas, Costa Rica, September 8, 2016. REUTERS/Juan Carlos Ulate. 

A Syrian boy plays next to the sea at the Souda municipality-run camp for refugees and migrants, on the island of Chios, Greece, September 7, 2016. REUTERS/Alkis Konstantinidis 

A dinghy overcrowded by African migrants is seen drifting off the Libyan coast in Mediterranean Sea August 20, 2016. REUTERS/Giorgos Moutafis TPX IMAGES OF THE DAY

Wooden crosses with numbers instead of names are seen in a cemetery in Lampedusa, Italy, October 6, 2013. REUTERS/Antonio Parrinello/File Photo 

Volunteers of a private aid organisation distribute food to migrants in a makeshift camp at a park near the San Giovanni railway station in Como, Italy August 12, 2016. REUTERS/Arnd Wiegmann/File Photo 

Volunteers of a private aid organisation distribute food to migrants in a makeshift camp at a park near the San Giovanni railway station in Como, Italy August 12, 2016. REUTERS/Arnd Wiegmann 

A migrant sits near a razor-wire topped fence in Calais, France, after Britain's referendum results to leave the European Union were announced June 24, 2016. REUTERS/Pascal Rossignol

Migrants from Afghanistan hold hands as they walk along the Serbian-Hungarian border fence at a makeshift camp near the village of Horgos, Serbia, June 14, 2016. REUTERS/Marko Djurica 

Migrants take dates for the Iftar (breaking fast) meal at a refugee shelter in a former hotel in Berlin, Germany June 9, 2016. REUTERS/Stefanie Loos 

A migrant eats the Iftar (breaking fast) meal at a refugee shelter in a former hotel in Berlin, Germany June 9, 2016. REUTERS/Stefanie Loos 

A life jacket washed up on the shore is pictured near a route frequented by migrants trying to cross the Mediterranean, near the coastal town of Zuwara, west of Tripoli, Libya June 4, 2016. REUTERS/Hani Amara 

A pair of pants washed up on the shore are pictured near a route frequented by migrants trying to cross the Mediterranean, near the coastal town of Zuwara, west of Tripoli, Libya, June 4, 2016. REUTERS/Hani Amara 

Life jacket washed up on the shore are pictured near a route frequented by migrants trying to cross the Mediterranean, near the coastal town of Zuwara, west of Tripoli, Libya, June 4, 2016. REUTERS/Hani Amara 

Life jackets washed up on the shore are pictured near a route frequented by migrants trying to cross the Mediterranean, near the coastal town of Zuwara, west of Tripoli, Libya, June 4, 2016. REUTERS/Hani Amara 

A makeshift camp at the Greek-Macedonian border is seen during a police operation to evacuate it near the village of Idomeni, Greece, May 25, 2016. REUTERS/Marko Djurica 

A girl who was sent out during a police operation to evacuate a makeshift camp at the Greek-Macedonian border near the village of Idomeni, stands in a bus in front of a camp in the village of Oreokastro, Greece, May 24, 2016. REUTERS/Marko Djurica 

Riot policemen walk amidst tents during a police operation at a refugee camp at the border between Greece and Macedonia, near the village of Idomeni, Greece, 24 May 2016. REUTERS/Yannis Kolesidis/Pool 

A refugee woman hangs her dress to dry at the sun after heavy rainfall at a makeshift camp for migrants and refugees at the Greek-Macedonian border near the village of Idomeni, Greece, May 22, 2016. REUTERS/Kostas Tsironis 

Refugees stand next to a flooded field during heavy rainfall at a makeshift camp for refugees and migrants at the Greek-Macedonian border near the village of Idomeni, Greece, May 21, 2016. REUTERS/Kostas Tsironis 

Italian riot police wait for demonstrators during a protest against a plan to restrict access through the Brenner Pass between Italy and Austria, in Brenner, Italy, May 7, 2016. REUTERS/Dominic Ebenbichler 

A demonstrator lights a flare during a protest against a plan to restrict access through the Brenner Pass between Italy and Austria, in Brenner, Italy, May 7, 2016. REUTERS/Dominic Ebenbichler 

Migrant Copts attend a Palm Sunday mass in the Samaan el-Kharaz Monastery in the Mokattam Mountain area of Cairo, Egypt, April 24, 2016. REUTERS/Amr Abdallah Dalsh 

A woman runs with a stick during a scuffle, which started at a food distribution queue, at a makeshift camp for migrants and refugees at the Greek-Macedonian border near the village of Idomeni, Greece, April 20, 2016. REUTERS/Stoyan Nenov 

A girl washes her face at a makeshift camp for refugees and migrants at the port of Piraeus, near Athens, Greece, April 20, 2016. REUTERS/Michalis Karagiannis 

The shadows of children are seen on a tent as they play at a makeshift camp for migrants and refugees at the Greek-Macedonian border near the village of Idomeni, Greece, April 19, 2016. REUTERS/Stoyan Nenov TPX IMAGES OF THE DAY

A migrant rests at a pier next to a makeshift camp for refugees and migrants at the port of Piraeus, Greece April 18, 2016. REUTERS/Alkis Konstantinidis TPX IMAGES OF THE DAY

A man stands amidst tear gas thrown during scuffles between Macedonian police and migrants and refugees near a makeshift camp at the Greek-Macedonian border near the village of Idomeni, Greece, April 13, 2016. Macedonian police fired tear gas on Wednesday to disperse around 50 migrants stranded in Greece who tried to pull down part of the razor wire fence separating the two countries, a Reuters witness said. REUTERS/Stoyan Nenov 

Macedonian police fired tear gas to disperse migrants stranded in Greece who tried to pull down part of the razor wire fence separating the two countries near Gevgelija, Macedonia, April 13, 2016. Picture taken through a fence. REUTERS/Ognen Teofilovski

A woman walks with a child through a fog at a field at a makeshift camp for migrants and refugees at the Greek-Macedonian border near the village of Idomeni, Greece, April 10, 2016. REUTERS/Stoyan Nenov TPX IMAGES OF THE DAY

Teargas canisters thrown by Macedonian police land among protesting migrants during clashes next to a border fence at a makeshift camp for refugees and migrants at the Greek-Macedonian border near the village of Idomeni, Greece, April 10, 2016. REUTERS/Stoyan Nenov 

Teargas canisters thrown by Macedonian police land among protesting migrants during clashes next to a border fence at a makeshift camp for refugees and migrants at the Greek-Macedonian border near the village of Idomeni, Greece, April 10, 2016. REUTERS/Stoyan Nenov