The document discusses the 5th Assizes of Decentralised Cooperation held in Brussels, highlighting emerging paradigms and best practices in local authorities' development cooperation, particularly in Italy, Portugal, and France. It provides an overview of the frameworks, legal guidelines, and case studies on how local and regional governments contribute to global agendas, specifically the Sustainable Development Goals (SDGs). Key messages emphasize the importance of multi-level governance, peer-to-peer activities, and assessing the impacts of decentralized cooperation.