 The Four Powers War involves the Klingons, Kzintis, Lyrans and Hydrans in the biggest armed conflict yet seen in Alpha octant from Y158 to Y162.The Klingons and Lyrans, forming the Coalition together, do well at first, but the tide of war changes with the introduction of Hydran Helbore Torpedoes and Kzinti fighters.Both sides accept a "status quo antebellum" peace rather than prolong the conflict.