I love the living world thing now.
As of Galena, My civ is apparently at war with the elves! I didn't even do anything either!
Unless, y'know, cutting down trees in front of them was a factor.
EDIT: Also there appears to be something odd happening with animal training for combat, as I have a zone designated with dogs pastured in it ready to train but it's spamming no creature being available. Strange considering it worked fine before.
EDIT II: The war already goes poorly for The Special Diamond. My liaison has reported numerous groups of refugees fleeing from the advancing elvish army lead by their queen or princess, as well as his oldest daughter being named the new queen of The Special Diamond following two fortresses being conquered (instead of a report of the residents fleeing,) suggesting that the king has been slain in battle with no heirs old enough to take the throne and the capital has fallen. As a show of force, I'm destroying the nature around my fortress, leveling all the desert lime, durian, and date fruit trees. They will come here eventually should peace not be settled soon.
It is inevitable.
I'm upping my population and child caps. My hope is that after the caravan leaves, the refugees will flock to Spiritnets seeking asylum come next year, and with them I can build an army to face off against the elves. Copper, steel, and iron will clash with wood, beast, and more wood, and only one faction can hold Spiritnets, and I won't let the elves take it without paying a price in blood.