During the war with Kindara, Derfel of Nbasah, the region that just flipped to Coralynth, refused to fight as it meant fighting alongside Sorraine. Derfel converts to Sartanism somewhere along the line, leading to speculation he was either a mole or troublemaker all along, given the timing of his defection, to a realm of Sartanists.
In othe news, Sorraine, which has been itching to spread Sartanism further north for a while, decided to pick on the realm that contributed more to the war with Cathay than Sorraine could with all that extra gold it had. Arcaean sponsored puppet realm decides the war isn't unbalanced enough, and joins the war on behalf of Sorraine.