AtHENS—The leaders of 15 human-smuggling networks gathered behind the closed curtains of an Afghan restaurant here in late February, the air fragrant from grilled lamb and hookahs. It was time to celebrate a boost to their business, people present recall. Police in Macedonia had just stopped letting Afghans cross the border from Greece.
Today, the entire human highway to Europe’s north, traveled by nearly a million refugees and other migrants last year, has been closed. The crackdown, complete with razor-wire fences guarded by riot police, has stranded about 50,000 migrants in Greece. Many are desperate to get out but too afraid to turn back. For those with cash left, smugglers are now the best hope.