Had two units just inside the siege border of another AI city. Attacked an independent people unit south of said city which caused them to flee north into said city and started a siege on said city. Was unable to move my two units out of the siege border. Bigger problem was this siege continued for the whole game! Was never able to move those two units as they were stuck inside the siege. This has happened other times where I've just been inside the siege border and an AI decides to siege and my units are stuck. We should be able to move them out of the siege since we didn't start the siege. I was not an ally or vassal or anything of the likes with any of these AI.