while playing regent. i found it amusing to start a war very very early in the game. with the closer AI have about 3-4 cities, with some distance between the 2 empire. not that I want to conquer them but the AI are handicap in empire building during war! they discover tech very slowly and spend their time building archers/horsemen that can't kill a couple of spearmen i have guarding my borders. as long as the ground is not open land, the horsemen can't retreat from attack! and they die! while doing this, i had expanded my empire to 2x their. before i begin to build up a force to destroy them. and it provide me a early chance to get eilte defenders and maybe an early leader. this may not work well if the AI have a start advantage like in deity where they have additional units to kill you!