inter-AI diplomacy: possibly bugged?

I started to think about this after I noticed that my allies that joined my wars early in the game were still in war with my former opponents some 30 years AFTER I had made peace with them... Of course, no real war activity (besides trade blockading) was going on. Come to think of it, I believe, I have not noticed an AI faction making peace with another AI faction unless one of them is destroyed.

Hmm... could this possibly be a bug? In MTW2 and RTW, AI factions used to make peace left and right with each other. The current ETW approach must really hurt AI's economy.

Yep, noticed this too. To be honest it's the only thing that has really frustrated me about the game thus far.