BRUSSELS (Reuters) - Germany's reimposition of border controls with Austria on Sunday has brought home the risks the summer refugee crisis poses to Europe's system of open frontiers, commonly known as "Schengen".
The Luxembourg village on the Moselle where old enemies France and Germany meet gave its name 30 years ago to the code which removed border checks between most European states. But hundreds of thousands of people arriving on the bloc's external borders claiming asylum, and discord among governments over where to put them, has exposed weaknesses in the Schengen ideal.