I'm playing my first game with this mod on a standard size map, continents. I'm on one continent with Zara who is my vassal; on the other continent there is Mao, Kublai, Frederick, Pascal and Isabella. I have been friendly with Mao and Kublai since I met them and I messed around in some wars over at the continent helping them out. At one point Mao declares war on Kublai - his former ally. Mao asks me to join in and I agree, capturing Kublai's capital and making him my vassal. Now, some 20 turns later the situation is as follows: Mao is master of Pascal, Frederick and Isabella. I'm master of Zara on my continent, Kublai on the other and I have one city there (former capital of Kublai, quite powerful city). Mao has been friendly with me for forever. The + and - on the diplomacy is +15 and -3. But, right after Mao got Isabella to be his vassal he declares war on me initiating a big world war. Can't say I don't particularly like it, because I have 77 turns to go and am building my spaceship, but isn't it a tad odd that he would attack me with such good diplomatic standings and history? My big question now is whether this is caused by the Better BTS AI mod? Since I'm building my spaceship and getting reasonably close to victory, could that be the reason why Mao attacked me? Or is Mao just a backstabbing bastard? I haven't really played many games with him yet... somehow the game always picks other leaders. Thanks for your help.