The Callisto Treaty is the name of the document signed in 2170 with which the Koslovic and Frieden commanders formally surrendered to the UNSC, officially ending the Interplanetary War.[1] The treaty was signed on the Jovian moon Callisto, hence its name. Following the ratification of the Callisto Treaty, Koslovic revolutionaries were put down in harsh crackdowns on Mars.[2]

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