The Permanent Representation of Belgium to the European Union is the largest Belgian diplomatic post in the world and one of the most active multilateral posts. The Permanent Representation is Belgium's voice in Europe and represents the Belgian interests in the Council of the European Union. The Representation is headed by the Permanent Representative, Ambassador Willem van de Voorde. He is assisted by Pierre Cartuyvels, Coreper I representative, and Stéphane Mund, Ambassador to the Political and Security Committee of the European Union (COPS).