Well, you interfered in the wars of the west (Breaking your sworn neutrality in the west) and attacked a realm that was under the protection of Aurvandil in instance that it comes under foreign attack, something D'Hara was perfectly aware of when they declared war.
I thought you said they were "neutral".
Make up your mind. D'Hara didn't attack you. It merely reclaimed its city from Quadvrium#2. Florence could have tried to appease us, rather she pissed us off every chance she got. And her realm paid the price for it.
