More recent examples of cross-border collaboration with new member states builds on the unbalanced level of economic development, bringing together “catching up” regions with strong but slower-growing regions from old member states. The co-operations tend to have a pragmatic and focused rationale, aiming to resolve issues arising from cross-border relationships, and driven more by public sector initiative and local governments than by higher level public authorities (OECD, 2003). The cross-border area around Iguazu Falls in Argentina, Brazil and Paraguay is an exception (Iguazu-Foz de Iguazu - Ciudad del Este).