You would have utilize anything to continue this war.
I will admit that we would not have stopped until we had taken back all the territory we lost in the last war. I doubt anyone would begrudge us that right. After that? Well, we probably wouldn't have wanted Ibladesh to stay that big, so they would /have/ to be cut down some. This gets them nice and angry and resentful toward Perdan, giving them reason to come back and attack us again.
Seriously, a good enemy is hard to find. If you keep wiping out all your enemies, who are you going to fight next?