I'd like to build a city on the other side of America, but their two cities produce an hourglass shaped border that owns a tile between them. They won't agree to an open borders treaty.
I can't believe I can't find the answer to this: can my settler pass through their border without inciting anger since it is a civilian unit? Naturally, if I put a warrior inside their borders, they'll be made. But what about non-military units?
btw: in anticipation of people suggesting that I pass through without ending the turn on the tile, the terrain is rough around and in the owned square, so I have no choice but to end the turn there. Also, I don't have the science yet to sail the unit around the land.