Hi there,
I've played a lot of games and would agree that there is nearly no ai aggression. In app. 90% of these games I've started my own 'wargame' 
I've started a new game the last WE and spend some (alot;)) hours in this game. During this time most of my buildings got bombed, my sims got knocked out, kidnapped, I was blackmailed and so on. The AI was abnormaly aggressive, which I never saw.
I've changed nothing to any config or script, simply started a new game.
