An exhausted and frustated migrant holds his head after he missed to get a place on a train heading to the Serbian border at the train station in Gevgelija, The Former Yugoslav Republic of Macedonia, August 13, 2015. From the beginning of the year to mid-June 2015, nearly 160,000 migrants landed in the southern European countries, mainly Greece and Italy, on their way to wealthier countries in Western and Northern Europe, according to estimates by the International Organization for Migration (IOM). (Photo by Georgi Licovski/EPA)

Migrants run to board a train that would take them towards Serbia, at the railway station in the southern Macedonian town of Gevgelija, on Wednesday, August 12, 2015. Macedonia is facing an increasing pressure of migrants flow on its southern and northern borders with Greece and Serbia as thousands of migrants from Middle East, Asia and Africa are heading north through the Balkans on their way to the more prosperous European Union countries. (Photo by Boris Grdanoski/AP Photo)

Migrants try to board a train that would take them towards Serbia, at the railway station in the southern Macedonian town of Gevgelija, on Wednesday, August 12, 2015. (Photo by Boris Grdanoski/AP Photo)

A sleeping migrant is reflected in a mirror where a poster of the Hellenic Red Cross is seen sticked at a deserted hotel where migrants found shelter at the Greek island of Kos, August 13, 2015. The United Nations refugee agency (UNHCR) called on Greece to take control of the “total chaos” on Mediterranean islands, where thousands of migrants have landed. About 124,000 have arrived this year by sea, many via Turkey, according to Vincent Cochetel, UNHCR director for Europe. (Photo by Alkis Konstantinidis/Reuters)

A migrant from Pakistan (R) has a shower as others wash their clothes at a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

A migrant from Pakistan hangs his washed clothes to dry in the garden of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

A migrant from Pakistan stands outside his tent in the garden of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

Mattresses used by migrants are seen at the lobby of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

A migrant shaves inside his tent set-up in the garden of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

Mattresses used by migrants are seen at the lobby of a deserted hotel on the Greek island of Kos, August 12, 2015. (Photo by Alkis Konstantinidis/Reuters)

A migrant from Pakistan sleeps at the reception desk of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

A migrant child from Pakistan plays with a ball as another migrant sleeps at the terrace of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

A migrant woman from Afghanistan (L) protects her sleeping baby from flies at a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

A migrant boy from Afghanistan sits at the staircases of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

Migrants from Afghanistan sleep at a hallway of a deserted hotel on the Greek island of Kos, August 12, 2015. (Photo by Alkis Konstantinidis/Reuters)

A migrant from Afghanistan sleeps at the terrace of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

A migrant from Pakistan (C) sits in his tent as others make their way in the garden of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

A migrant from Afghanistan sits at the terrace of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

Migrants from Afghanistan are seen from the terrace of a deserted hotel on the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

A Syrian refugee holds her daughter as she waits to enter the national stadium for a registration procedure at the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

Syrian refugees wait to enter the national stadium for a registration procedure at the Greek island of Kos, August 13, 2015. (Photo by Alkis Konstantinidis/Reuters)

A dinghy overcrowded with Syrian refugees approaches a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece, August 13, 2015. (Photo by Yannis Behrakis/Reuters)

A Syrian refugee carries a child as they arrive at a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece on a dinghy August 13, 2015. (Photo by Yannis Behrakis/Reuters)

Syrian refugees arrive at a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece on a dinghy August 13, 2015. (Photo by Yannis Behrakis/Reuters)

Syrian refugees arrive at a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece on a dinghy August 13, 2015. (Photo by Yannis Behrakis/Reuters)

A migrant girl looks towards the see as they arrive on a dinghy at the southeastern island of Kos, Greece, after crossing from Turkey, Thursday, August 13, 2015. Greece has become the main gateway to Europe for tens of thousands of refugees and economic migrants, mainly Syrians fleeing war, as fighting in Libya has made the alternative route from north Africa to Italy increasingly dangerous. (Photo by Alexander Zemlianichenko/AP Photo)

Syrian refugees arrive at a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece on a dinghy August 13, 2015. (Photo by Yannis Behrakis/Reuters)

A young Syrian child looks at the camera as migrants arrive at a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece on a dinghy August 13, 2015 in Kos, Greece. Greek police used fire extinguishers and batons to keep migrants in check on the island after violence broke out in a sports stadium where hundreds of people, including children, were awaiting their immigration papers. Dozens of migrants have been treated for panic attacks with a number reporting police beatings, as the situation continued to deteriorate. (Photo by Milos Bicanski/Getty Images)

A Syrian refugee carries a child as they arrive at a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece on a dinghy August 13, 2015. (Photo by Yannis Behrakis/Reuters)

Women migrants and children from Syria take a rest as they arrive on a beach of the Greek island of Lesbos, after crossing on an inflatable boat with 35 people, the Aegean Sea between Turkey and Greece, on August 12, 2015. Some 124,000 people, almost all of them fleeing war and persecution in Syria, Afghanistan and Iraq, have come ashore since the beginning of the year – a 750-percent increase from the same period last year, the UN refugee agency said on August 7. (Photo by Achilleas Zavallis/AFP Photo)

Migrant women carrying children comfort each other upon reaching the Greek island of Kos after crossing a part of the Aegean Sea between Turkey and Greece on August 13, 2015. Greece sent extra riot police to Kos as tensions mounted over a huge influx of migrants. The Greek government said it was “immediately” dispatching a ship to Kos to double up as an accommodation and processing centre for up to 2,500 people as around 7,000 migrants wait to apply for immigration papers. (Photo by Angelos Tzortzinis/AFP Photo)

A Syrian refugee gives his wife water moments after arriving at a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece on a dinghy August 13, 2015. (Photo by Yannis Behrakis/Reuters)

Syrian refugees dress-up their child with dry clothes moments after arriving at a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece on a dinghy August 13, 2015. (Photo by Yannis Behrakis/Reuters)

A Syrian refugee child pauses moments after arriving at a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece on a dinghy August 13, 2015. (Photo by Yannis Behrakis/Reuters)

A dinghy overcrowded with Syrian refugees approaches a beach on the Greek island of Kos after crossing a part of the Aegean sea from Turkey to Greece, August 13, 2015. (Photo by Yannis Behrakis/Reuters)