I'm stuck in constant war that I can't end with The Aztecs. I think it has being going on for at least 150 turns. He is fighting offensive war, and he can't make progress. I kill 2-3 of his units per turn, without losing any units. I have gained huge advantage in unit quality through promotions. I have 1 unit per city, and able to withhold due to frigates on sea which he can't attack. Every time I ask for peace he is asking for 2 cities. He has superiority in # of units, and I think the AI is stupid in not recognizing when they are beat. It is becoming tedious in literally killing his units only for him to come back next turn. I'm playing immortal and have no allies with city states. How do I get peace, even for 10 turns (to repair my improvements)?