The Terran Dominion was created after the fall of the Confederacy at the height of the war between the Terrans, the Zerg and the Protoss. Headed by Arcturus Mengsk, the former leader of the Sons of Korhal, the Terran Dominion suceeded in gaining control of much of the Koprulu Sector. At the time of the Brood Wars, the Terran Dominion came under siege from an expeditionary force from the United Earth Directorate. By the end of Brood War the UED Expeditionary Force was annihilated, leaving behind a ruined Dominion. Having been driven to the brink of annihilation by various UED, Zerg, and Protoss assaults, it nevertheless survived. The Dominion is opposed to the Protoss and the Zerg and is in favor of stopping all warfare between Humans.