An AI sends in a Great Prophet and there doesn't seems to be a way to get rid of it short of declaring war.
Archipelago map, King. I have a religion which is firmly entrenched in all four of my cities and a couple of nearby city states so its not as if my religion will be suppressed but a Russian Great Prophet has been wandering around for about 30 turns. Between shuffling an inquisitor between my cities and blocking with units it has not been able to convert any of my cities but just won't get the message and go harass someone else. I'm getting fed up with this pointless activity (unless you believe the AI is programmed to annoy the human )
I notice that the AI can and does ask me not to convert its cities when I do convert one but I don't seem to be able to find an option for a diplomatic request that I can ask the AI the same - am I missing something, did the game designers miss something or did they decide the human didn't need that option?
I refused to renew open borders but Great Prophets ignore not having open borders anyway so it's still there.
In previous games I have simply declared war and killed the pest. If I have to do that and screw up diplomatic relations with Catherine I will but surely there is another way?