There is a minimum number of turns while in a war before they CAN make peace as well. I can’t remember the number because I may have made some edits to that previously.Thank you for your reply my friend.
1) Exploitable how? One thing that pops to my mind is that getting large sum from AI for GPT then declare war so you don't have to pay back. I accept that it's indeed undesirable. But is there something exploitable the other way around (aka my example)?
2) Sorry I poorly expressed myself. I meant that when you would pay an AI to make peace with another one.