European countries tighten borders

The European Union is dealing with an increase in legal and illegal arrivals by migrants, prompting some member states to temporarily re-introduce border controls within what is normally a zone of free movement.

The bloc's Schengen rules allow such action "as a last resort" in cases that are deemed serious threats to internal security or public policy.

These countries have reinstated stricter checks:

* Austria introduced checks at its border with the Czech Republic in October, set to last until Dec. 6.

As of November, it extended border controls with Slovenia and Hungary until...