I feel like nobody read the treaty
I thought about what might happen if Rania got her way and the south were fully colonized and unified. Even realms of the same faith and origin develope problems. So I wrote the following...
The Trifecta: Article VII States...
Total War between Signatory States shall be absolutely forbidden. In the case of irreconcilable differences, Belligerent States must submit a credible Cassus Belli (to be judged by Trifecta and/or Herald Leadership), and specific goals. In the event of a Declaration of War between Signatory States, it is generally understood that said War will only have a period of 3 months, or 90 days, to be resolved at the risk of directed intervention from signatory members at the direction of Trifecta Leadership towards the purpose of ending said war in the swiftest possible manner.