European Territorial Cooperation (ETC)
ETC, better known as Interreg, is one of the two goals of cohesion policy. It provides a framework for the implementation of joint actions and policy exchanges between national, regional and local actors from different Member States. It aims at helping to ensure that borders are not barriers, bringing Europeans closer together, helping to solve common problems, facilitating the sharing of ideas and assets, and encouraging strategic work towards common goals. All this demonstrates its clear European added value. Interreg is built around three strands of cooperation: cross-border (Interreg A), transnational (Interreg B) and interregional (Interreg C).
http://ec.europa.eu/regional_policy/en/policy/cooperation/european-territorial/