A migrant, who is waiting to cross the Greek-Macedonian border, reacts while being photographed at a makeshift camp near the village of Idomeni, Greece March 9, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant stands by a fire at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant walks in a mud at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants rest at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant walks in a mud at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants walk in a mud at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants walk in a mud at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants clean their boots from mud at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants rest inside their tent at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants from Syria warm themselves by fire at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant walks in a mud at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant walks in a mud at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants walk in a mud at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant boy holds his umbrella while standing in a mud at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants rest in a tent at a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant uses his mobile phone near a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant girl stands among tents at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants collect their belongings at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants wait for food in a queue at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant girl cries as she walks through a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrant girls watch from behind a tent at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant pushes a cart with his belongings through a field at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants stand outside their tents at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant sits on railway tracks at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant woman stands outside a tent at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant boy walks along railway tracks at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrant children play at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants stand next to railway tracks at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrant children stand in a tent at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrant sit in a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant boy uses a piece of a tent as a kite as he runs in a field near a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





Migrants try to get products from a truck at a makeshift camp on the Greek-Macedonian border near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A migrant boy stands in a puddle in a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 10, 2016. (Photo by Stoyan Nenov/Reuters)





A child's doll lays on the tracks as more than 13,000 refugees are stranded at the Greek-Macedonian border, March 10, 2016 in Idomeni, Germany. (Photo by Action Press via ZUMA Press)





A refugee prepares food in front of his tent at a camp at the border between Greece and the Former Yugoslav Republic of Macedonia (FYROM), near Idomeni, northern Greece, 10 March 2016. After Slovenia, Croatia, Serbia and Macedonia have sealed their borders to the migration flow, tens of thousands of people are left stranded in Greece, where most migrants enter the European Union to continue on to wealthier countries in Northern Europe. Greece estimates that more than 25,000 migrants are presently on its territory, with more than half stuck at the makeshift camp Idomeni, on the border with Macedonia. (Photo by Valdrin Xhemaj/EPA)





A man covered with thermal blanket walks along railway tracks beside an improvised refugee camp on the border line between Macedonia and Serbia near the northern Macedonian village of Tabanovce, Thursday, March 10, 2016. Around 1.500 migrants and refugees are stranded at Tabanovce transit center for refugees in northern Macedonia. (Photo by Boris Grdanoski/AP Photo)