They dont have to even be ar war i think?
It was a long time ago so correct me if im wrong, but- one of my first games (monarch)
spain attacked me - usual religious hatred
I countered, wiped out her armies and closed in on her cities
Then...she vassaled to gilgamesh!!! Lots of time fighting, no gains..
It was a long time ago, but i am sure thats what happened.
Yeah, that's right but I've seen it happen with multiple wars more often.