Regency of Karadûn (concept)
The Regency of Karadûn—self-styled as the Kingdom, and later Empire, of Sarradon—was one of the most stalwart bastions of Sophocism on the continent, existing in some form from the beginning to the end of the The War in Heaven. Though the polity officially claimed to be an unbroken continuation of the Kingdom of Sarradon, most historians place its beginning as Ulaihir's retreat to the ancient fortress of Qarmuz following his defeat at the Battle of the Burning Key. Shielded by the Tarsanide Mountains, the polity would rapidly become a refuge for a number of Sarradonian high nobles, fleeing from the advancing tide of the The Great Uprising.
Despite its lofty claims, the Regency would spend most of its history struggling to reign in even the territories it notionally held, with the Regency itself effectively reduced to a pawn in a region dominated by warlords. Nonetheless, several attempted Wardenite invasions would be staved off, either by the united armies of the realm or the walls of Qarmuz themselves.
Following the surrender of Qarmuz to Hanathi in 985 IS, the state was renamed the 'Empire of Sarradon'—A heretofore unprecedented title—marking the beginning both of an age of centralization and of conquest. Despite general success against foes both internal and external, the fallout of these reforms and wars would tear the state asunder over the course of the 11th century IS, during which the Mamurs would begin their final march towards the destruction of the Regency. Finally, in 1233 IS, the walls of Qarmuz themself were breached, marking not only the end of one of Sarradon's oldest polities, but of the War in Heaven.