The European Union represents today a macro-regional structure with unique characteristics in the world, which has enough power to globally promote its economic interests, but encounters problems at political level regarding the capacity to exercise leadership. At EU level, cross-border cooperation was discussed only in 1980, under the European Framework Convention on Cross-Border Cooperation of Territorial Communities or Authorities, signed in Madrid on 21 May 1980 (European Framework Convention on Cross-Border Cooperation). In doing so, the Council of Europe seeks to ensure the participation of Europe's local authorities or territorial authorities in cooperating with local authorities or territorial authorities on issues such as regional...