Europe’s refugee crisis and Islamist terror are putting a strain on one of the EU’s prestige projects. But is Germany’s decision to block free travel within the Schengen zone justified? Anthee Carassava reports.

It was supposed to be another routine flight from Greece to Germany. But as the Aegean Airlines plane landed at Stuttgart airport, George Anastasopoulos sensed something was wrong.

The pilot had parked at a discernible distance from other commercial aircraft, and the boarding gate — used to connect the plane to the terminal — was missing.

Read more: http://www.dw.com/en/greeks-condemn-controversial-german-airport-checks/a-41547470