AS the Schengen area closed its external borders last week, in a move designed to replace the closing of member states’ national borders against imported Covid-19 infection, some internal barriers still went up in Europe. The day after the European commission’s announcement, the Greek government introduced a set of measures that would apply to the migrant camps in the Greek islands…

This article first appeared in The Guardian on 21 March 2020. To continue reading, click here.