I 've just finished a game with these opponents : Zulu, Rome, Mongol, Celt, Japan, Scandinavia, Aztec. I was Persia. With all those Militaristic and aggressive civ's arround , it promised to be a exciting game. Rome was on the other side of the pangea map. Caesar never annoyed me so he was the second biggest civ arround. By that time he thought he ruled the world and started to finish of the weaker civs. Since they were important for me for trading , I wanted them to stick arround. I had all the land and resources I wanted. Now, To calm Caesar down I signed MPP's with those guys, but he didn't pay any attention to , although he knew he would get in fight with me ( the most advanced, most productive and biggest civ of all ) and my 2 allies... Is there any way to calm a civ down ? It would be nice to have a diplomatic way. Some other valuable new options would be: 1) one-side ROP , obviously. 2) disarm treaties, for instance, not allowing they get equally or stronger then you. 3) No nuke-treaty. If the other builds nukes, you got a legitimate reason for war. 4) No fleet-treaty , not allowing the other to build ships. 5) No Flight-treaty, not allowing the other to build planes. I discussed number 4 and 5 once in a MP-game.