Federal Union of European Nationalities
The Federal Union of European Nationalities (FUEN) is an international non-governmental organization (NGO) established in 1949 in conjunction with the formation of the Council of Europe. FUEN is an umbrella organization, and as of 2023, it has more than 100 member organizations representing ethnic, linguistic and national minorities within Europe.
Source: Wikipedia — Federal Union of European Nationalities (CC BY-SA 4.0)