"ECOSY - Young European Socialists gathers Socialist and Social Democratic youth movements of the European Union, Central and Eastern Europe and of the Mediterranean countries. It was founded in November 1992 in The Hague, Netherlands ... ECOSY - Young European Socialists is the youth organisation of the Party of European Socialists (PES) and the Socialist Group in the European Parliament. We work closely also with the PES Group in the Committee of Regions." (Quoted from site)