the shenen area Europe's passport free zone Binding Together 420 million Europeans is now under threat once a pillar of European integration its future is increasingly uncertain last week Germany announced it would reintroduce border controls with all nine of its neighbors citing a surge in irregular migration and recent extremist attacks Hungary quickly followed suit tightening its borders to stem the flow of migrants the Fallout has been immediate Poland called Germany's move unacceptable while Austria refused to accept migrants turned back at the border with Slovenia and Italy also ramping up controls Shen's future as a seamless travel zone is now on Shaky Ground