The Paris attacks are transforming Europe’s migration crisis into a security debate, spurring calls for a clampdown on free movement across borders, and putting proponents of an open door for refugees on the defensive.
France’s firm belief that Islamic State militants planned the attacks—and the possibility that at least one assailant may have posed as a Syrian refugee—are fueling arguments over whether Europe is doing enough to protect itself from terrorists who might infiltrate the thousands of migrants arriving daily from the Middle East and elsewhere.
Evidence that some of the attackers crossed internal European Union boundaries to get to Paris have also brought more demands from EU-skeptic politicians to abolish the continent’s system of open borders.
To proponents of European integration, the attacks highlight the need for more EU cooperation on security and better joint protection of the bloc’s external frontier. But those voices, led by German Chancellor Angela Merkel, are now likely to face even stronger opposition from politicians who want to show they are taking national security more seriously than lofty European ideals.