Refugees walk in muddy puddles in 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 FYROM 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 FYROM.