Tusk Sees Threat to Borderless Travel as Slovenia Eyes Fence

  • Slovenia may join Hungary in erecting fence if EU plan fails
  • Crisis has potential to create `tectonic' changes in Europe

Sections of a border fence erected along the Serbia-Hungary border.

Photographer: Matt Cardy/Getty Images

Warnings of an end to visa-free travel intensified in the European Union as Slovenia said it may join Hungary in fencing off its borders if the bloc fails to help countries on its southeastern fringe.

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