The Republic of El Kadsre (Japanese: エルカドスレ共和国 Erukadosure kyōwakoku) was a country located in the central El Kadsreian Islands that existed from 1950 to 1958 and claimed all authority of El Kadsre. Established in 1950 after KSR's victory over the Sentanese Empire in the Eight-Day War, it was internationally recognized in 1952 and became a member of the Western Bloc in the same year. In 1958, the Republic of El Kadsre was split up into West El Kadsre, East El Kadsre and North El Kadsre.

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