International Socialist Left
The International Socialist Left was a Trotskyist group in Germany. The isl was an organizational descendant of the International Marxist Group. It was one of two factions that form the German section of the Fourth [International (post-reunification)|Fourth International] was affiliated with the Association for Solidarity Perspectives.
Along with co-producing the VsP's newspaper Sozialistische Zeitung, the isl worked with the Revolutionary [Socialist League (Germany)|Revolutionary Socialist League] and groups in Austria and Switzerland to produce Inprekorr, the German-language magazine of the Fourth International.
In December 2016, the ISL and the RSB announced that they had merged to form the new International Socialist Organisation.