Arrivals in Europe up 15 percent over last year as a deal with Turkey remains fragile

A year after hundreds of thousands of refugees snaked their way across southeastern Europe and onto global television screens, the roads through the Balkans are now clear, depriving an arguably worsening tragedy of poignant visibility.

Europe's migrant crisis is at the very least numerically worse than it was last year. More people are arriving and more are dying. But the twist is that, compared with last year, a lot of it is out of sight.