The CoR supports decentralised cooperation among regions and cities in the EU and partner countries. In the framework of the Nicosia Initiative, it helps Libyan municipalities strengthen their administrative capacity and improve public services delivery.
With the renewed Portal of Decentralised Cooperation, the CoR aims to contribute to creating new partnerships and upscaling existing partnerships.
Together with the European Commission, the CoR organises the Forum "Cities and Regions for Development Cooperation". The Forum's 2019 edition focused on partnerships for sustainable urban development.