"Schengen: Achievements and Challenges in Managing an Area Encompassing 3.6 million km²." CEPS Working Document No. 284, February 2008

This paper assesses the achievements of the European Commission and the member states over the last six years in the management of Europe's internal and external borders. The key stages in the development of the Schengen acquis are identified, including the creation of FRONTEX (the EU agency responsible for coordinating the operational cooperation between member states in the field of border security) and the recent Schengen enlargement. The author attempts to explain the main reasons why the member states of the European Union have relinquished some of their much-treasured sovereignty and pooled their financial and human resources in a bid to manage and police Europe's external borders more effectively. Finally, this paper considers the fundamental question of how to make Europe's controls more effective, more technologically advanced and more responsive to the new challenges posed by globalisation, without impinging on the principle of the free movement of people