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Border Zone is the name of a star system on the outermost fringes of the Terran Confederation in the Epsilon Sector. It is a Kilrathi territory that lies beyond enemy lines. As its name implies, it is directly within the border between the two factions.
Little is known of the Border Zone due to the fact that it is under Kilrathi control. It likely hosts a large security force that defends the Kilrathi Empire. In 2654, the TCS Tiger's Claw launched Operation Thor's Hammer within this system, the Terran operation to destroy the Kilrathi fleet that eradicated the Terran colony at Goddard.