The Liberation Front of the Slovene Nation (), or simply Liberation Front ("Osvobodilna fronta", OF), originally called the Anti-Imperialist Front ("Protiimperialistična fronta", PIF). The Anti-Imperialist Front was initially aimed at supporting the Soviet Union (still in a pact with Nazi Germany) in its fight against the imperialistic tendencies of the United States and the United Kingdom (the western powers), and it was led by Slovenian Communist Party. When Germany attacked the Soviet Union, the Anti-Imperialist Front was renamed and transformed itself into main anti-fascist Slovene civil resistance and political organization under the guidance and control of the Slovene communists. It was active in the Slovene Lands during World War II. Its military arm was the Slovene Partisans. The organisation was established in the Province of Ljubljana on 26 April 1941 in the house of the literary critic Josip Vidmar. Its leaders were Boris Kidrič and Edvard Kardelj.