Internationaler Sozialistischer Kampfbund

International Socialist Militant League
Internationaler Sozialistischer Kampfbund
AbbreviationISK
FoundersLeonard Nelson
Minna Specht
Founded1925 (1925)
Dissolved1945 (1945)
Split fromSocial Democratic Party of Germany
Merged intoSocial Democratic Party of Germany
IdeologyEthical socialism
Anti-clericalism
Anti-Marxism
Political positionLeft-wing

The Internationaler Sozialistischer Kampfbund (German: [ɪntɐnatsjoˈnaːlɐ zotsjaˈlɪstɪʃɐ ˈkampfbʊnt], "International Socialist Militant League") or ISK was a socialist split-off from the SPD during the Weimar Republic and was active in the German Resistance against Nazism.