Attitudes to the Schengen zone
Staying on an official visit in Hungary new Polish Prime Minister Mateusz Morawiecki, right, and his Hungarian counterpart Viktor Orban Source: MTI
It's been two years since the peak of Europe's refugee crisis, but some countries in the European Union say security remains an issue. Attitudes to the Schengen zone - previously one of the bloc's central pillars - have also changed.
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