Brood War

The Brood War, also known as the Galactic War for Domination in UED circles and the Koprulu Emergency in NSC circles, was a zerg civil war pitting Daggoth and Sarah Kerrigan, both of whom sought to succeed the Overmind. Various protoss and terran factions were drawn into the conflict, spurred in part by an invasion by the United Earth Directorate.
Though the war ended in victory for the Queen of Blades and her broods, the UED Expeditionary Fleet, defeated but not broken, has been able to escape to southwest Koprulu, where it established a presence with the capital world being Braxis and in part by intervention from the Novayan Stellar Commonwealth's Task Force Koprulu, which was stationed in southern Koprulu to augment and reinforce the Terran Confederacy.