Migrants pass under a highway security fence as they try to find a new way to enter Hungary after Hungarian police sealed the border with Serbia near the village of Horgos, Serbia, September 14, 2015. REUTERS/Marko Djurica
ROSZKE, Hungary/VIENNA (Reuters) - Two decades of frontier-free travel across Europe unravelled on Monday as countries re-established border controls in the face of an unprecedented influx of migrants, which broke the record for the most arrivals by land in a single day.
Germany's surprise decision to restore border controls on Sunday had a swift domino effect, prompting neighbours to impose checks at their own frontiers as thousands of refugees pressed north and west across the continent while Hungary sealed the main informal border crossing point into the European Union.
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