On King, I have noticed a very common trend. When I get to the second continent (in a continents map), I realise that one of the AI civs there has become a runaway because the other 2 AI civs on that continent have been sitting around letting it do whatever it wants, while I have been forced to go to war on my home continent. Why doesnt the AI go to war with each other often? The only times they seem to do it is when they have a MASSIVE advantage. Are they hard coded to not declare war on each other much?