What is the fine-grained topic of the following text: Governor Vrishka, the Skani Water Mage of Barrow, has marched an army from the North, and sends terms: Surrender Fairbanks and restore the Skani mages to rule, or he will raze the city and kill all the shifters. Only return the topic.
Governor Vrishka's ultimatum to surrender Fairbanks and restore Skani mages to rule