Playing as Poland, on King. I've been peaceful all game, though understandably the runaway. (I decided to go for science before starting, but with an incredible science-culture-gold feedback loop working very nicely. Persia and Inca have been closest to me in score, though never come close to eclipsing me, and have been my friends almost the entire game. So now Persia is "plotting against me," but whatever. I know enough to not be afraid of that. Mongolia has been on my border all game, has been friendly and never threatened me, but has taken some of the buffer city-states surrounding me. Everybody hates Mongolia, and I get a request every few times to go to war against them, but haven't. I've got wonders to build, infrastructure to build up, they're not going to hurt me, not my dog, etc. Finally, we get to the point where Persia, Inca, and England are all at war with Mongolia, who should be a pushover right now but we know how much trouble the AI has in following through with such things. I get to the pointy where I can build up an army to dissuade Persia from backstabbing me, and I might as well earn a little favor and get my CS buffer border back... So I go to England, who is, again, at war with Mongolia, and make a deal for a few bucks to enter the war with them. Karakorum is on my border, so I take that first. Because of its placement and my culture-science-gold game, I don't actually want or need it, so I immediately trade it to England for almost nothing. Now Elizabeth hates me for my warmongering. SMH.