It kind of surprises me that, with all the great articles in the war academy, there is nothing about why the AI attacks. So I was wondering what people thought or if anyone had done any digging. I assume that factors include: Military power (an AI with a larger military than you is more likely to attack) Attitude (a furious AI is more likely to attack) Score (an AI with a lower score is likely to see you as a threat, an AI with a higher score may see you as an opportunity) Strategic/luxury resources (an AI without oil may attack you to get it) Need to expand. The UU - it seems that AI's often get into wars when their UU is available. AI Aggressiveness level (Bismark is more likely to attack than Joan) These things interplay, though. I was reading someone (sorry - dont' remember who) who tried a no military approach. It didn't work on lower levels, perhaps because they were ahead in score but weak in military, but worked on Deity, because they were behind in score - basically, they were no threat to AI. Anyone looked into how these things interplay?