The traditional definition of security in military terms is inadequate. Economic, social, demographic and environmental problems have a considerable impact on national security. A broader concept of security should be adopted to encompass not only the stricto sensu military aspects (the so- called “high politics”), but also other aspect such as economic, social, demographic, environmental, etc. (“low politics”). In this context, the Mediterranean region constitutes a “security complex” characterized by high interdependence, which makes close cooperation among Mediterranean countries absolutely necessary for the solution of various common problems.