It really drives me crazy that the AI just keeps walking through my territory. There is no way to tell them to stay out of my territory. I don't even get a pop up or any notification of them being there even though I don't have any pacts. If I tell them to get off my land, they just come right back the next turn. And thats even if I'm allowed to talk to them, sometimes they are too busy. This really is frustrating, especially when they can then create a city or outpost in the middle of my territory.