Quote Originally Posted by Driderman View Post
If they have coal, and you're allied, you have access to their coal. You sure you're allied? Some other Civ might have overtaken you while you weren't paying attention. Only other explanation I can see is a bug, if the coal is displayed on the City State screen as one of the resources they have. Unless of course pillaged resources still appear, but I doubt that.
Nope, I was allied, and it said it had coal, and I had no coal. Anyways, I resolved it by getting battleships, aircraft carriers, and bombers and took it. And then I did the world a favor and conquered Genghis Khan. Now who to invade next...