Diplomacy is broken

[Didz]

Then Turkey decides to be a moron and blockades one of my ports. WHY WOULD YOU DO THIS? If you wanted to evilly betray me, why not launch a surprise army against my cities?

I'm convinced that this is a consequence of the mission system overriding the AI. Certainly, when playing as a Catholic faction you will frequently get Papal missions to blockade ports for one turn in return for a reward and these ports are often owned by a faction that you are neutral or even allied with just because they annoyed the Pope. Its not so clear why when playing Egypt your ports would be targetted by missions but that still seems to be the most likely cause.

BTW: I have frequently found that if you immediately offer the blockading faction a cease fire it will accept willingly and simply withdraw its fleet. Suggesting that having earnt its reward it is only too willing to go back to its AI controlled strategy.

I'm surprised that this would not work with Turkey if they blockaded your port from a status of ally, but clearly for some reason they were very unhappy with you over something. Did you attack their blockading fleet?

I notice then that Hungary takes Constantinople. Not with a particularly large army mind, and Byzantine has a full stack nearby. So what do they do with it? They march it into /my lands and lay siege to one of my cities/. Their ally.

I must admit I'm surprised that you are getting this much aggression from the strategic AI on Medium Campaign setting, but then I've never played Egypt so I don't know if its a factional variant.

I found the AI behaved like this on VH campaign mode which was the main reason I went back to Medium. I can understand the fact that the Catholic actions would become intransigent given the Papal demands for crusades and the fact that you occupy the holyland but that doesn't explain why the Moors and Turks are being so hostile.

I haven't had that problem playing Turkey and I never give anyone money except the Pope when I'm playing Catholic. Are you sure your playing on Medium?