The Callisto Treaty was the peace treaty signed in March 2170, bringing an official end to the Interplanetary War. After the last vestiges of the Koslovic and Frieden forces were apprehended, their surviving commanders formally surrendered to the United Nations. Penned by the United Nations, the Callisto Treaty served as a ceasefire agreement that gave the United Nations Space Command complete military jurisdiction across all human colonies. The aftermath of the treaty's ratification would see the Unified Earth Government becoming a full-fledged governing entity. The treaty was signed on the Jovian moon Callisto, hence its name. Following the ratification of the Callisto Treaty, remaining Koslovic revolutionaries were put down in harsh crackdowns on Mars.
List of appearances
- Halo Mythos (First mentioned)