Riombara: The Darka of Belauterra.
Right, because Darka is completely isolated down a long corridor of land completely surrounded by sea, and in order to reach more than a single other realm from their farthest-in-the-corner region, they would have to travel at least a full week.
There's a massive difference between "we've made alliances that mean we need to travel a long way to fight against someone" and "any realm here, no matter how the politics was set up, would have to travel a long way just to
meet someone else".