Brussels Attacks Tear at the Fabric of the European Union

The March 22 terrorist attacks in Brussels come as the European Union is still reeling from the November Paris attacks and scrambling to solve the migrant crisis. More important, they come as nationalist forces are challenging key principles of the Continental bloc, from the free movement of labor to the Schengen Agreement, which eliminated border controls among several member states. The atmosphere of fear and suspicion that will follow the Brussels attacks will only worsen Europe's social, political and economic crises....