It's a pity they fail at diplomacy so bad. The southern realms could probably brought to actually bring military forces to support Caerwyn, it's no less far-fetched than the participation of all the SA realms we saw. And I think they would all prefer that Caerwyn remain than to see Allison as a neighbor.
Can't just barge in and spark a world war either, though. Caerwyn should have attempted to cut their losses long ago...
