Association for Solidarity Perspectives (Germany)
The VSP was formed in October 1986 in West Germany as the United Socialist Party (' Vereinigte Sozialistische Partei'), a merger of the trotskyite International Marxist Group (GIM) and the former stalinist Communist Party of Germany (Marxist-Leninist). At the begin of their conglutination the VSP had about 600 member. The parties combined their newspapers, was tun (What to do) and Roter Morgen (Red Dawn) respectively, to launch the Sozialistische Zeitung (Socialist Newspaper, SoZ). The new founded party conduct grave proceedings for over 2 years with the League of West German Communists ('Bund Westdeutscher Kommunisten') about another amalgamation, but this efforts remain because of varying views about feminism fruitless. The VSP had a flak against the german reunification and was engaged in the fugacious left-wing resistance movement Nie wieder Deutschland ('Never again Germany'). 
When the former ruling party of the GDR, the Socialist Unity Party (SED), reconstituted itself as the Party of Democratic Socialism (PDS) after German reunification, individual members of the VSP entered the party and won official positions in the party. However, the VSP remained independent of the PDS.
In 1994, the VSP changed its name and organisational form to Association for Solidarity Perspectives (Verein für solidarische Perspektiven, VsP). One faction of the Trotskyist current in the VsP departed in 1994 and formed the Revolutionary Socialist League (RSB). The Trotskyists who remained in the VsP formed a caucus called the International Socialist Left (ISL).