So I'm slowly wiping out the foolish American empire for declaring war on me. The Mali empire borders both of us - Mansa Musa is 'Pleased' with me. Suddenly, without warning or any prior problems between us, Mansa Musa declares war on me and vassalizes the Americans. I look at the diplo, and sure enough, I'm now at war with a 'Pleased' Mansa Musa. This is just illogical. He's at war with me and refuses to talk to me, but is still 'Pleased.' His diplo stance didn't finally change until I finished wiping out the Americans and then wiped him out, too. This is stupid for a number of reasons. Here I am with a massive army just steamrolling the Americans. Mansa Musa has good relations with me, and pretty much no army of his own. Yet he ignores all of that and declares war on me in order to vassalize a quickly-fading American empire. It's just dumb. Horrible AI programming, imo - it's like they don't even consider pros/cons. The second thing I had was Huayna Cupac (or whatever, can never remember how to spell his name). He's on another continent and fairly weak, so I pretty much treat him like dirt. He refuses to deal with me at all, since I'm his "worst enemy." Won't budge on a single thing...no resources, no maps, no open borders, nothing. That's all well and good. Suddenly, Huayna Cupac sends me a greetings and requests to trade goods. I mouse over him to see his diplomacy stance with me...and it reads "We will never trade with you, our worst enemy!" - while he's offering me a trade. So dumb. This stuff obviously isn't gamebreaking. It just really annoys me. Diplomacy has been the weak point of this franchise since the first Civ.