See, my problem is the opposite. In my games (tiny world, challenging difficulty across the board, me and one other Kingdom civ with 4 other empire civs) ...
...no one ever attacks me. I throw a couple of observers into each city, nothing huge, and send my sov merrily around the world, adventuring with his summonned creatures and beating the hell out of whatever he finds.
Eventually, one of the other civs will get in my way (box me in, be unlucky enough to have a quest target in their land and not want to open borders, or just generall annoy me) and I wipe them out.
So, yeah, I guess it does seem war oriented - but all the wars I've seen have been started by me.
Oh, one exception - last run, the yellow spider guys declared war on me. They were on the other side of the world, with no clear route to me, and I never saw a single offensive unit... but they DID declare, so I guess there is one exception...