@ TruePurple: If you have MA with other civs and make peace before the 20 turns are up, you have broken the MA deal. Also, when not involved in a mutual war, the AI takes into consideration your behavior during the war... razing, pillaging, etc.
@ Fried Egg: No, the AI doesn't understand a luxury not traded is worthless. It places a value on it by how much good it will do you and sticks to that.
@ Fried Egg: No, the AI doesn't understand a luxury not traded is worthless. It places a value on it by how much good it will do you and sticks to that.