Psyringe
Scout
There is nothing to "admit", except that the AI is programmed rather effective in this respect. It has three war modes: Limited war (which you seem to mistake for "They don't hurt each other"), dogpile war (which you seem to mistake for "unfair ganging up"), and "Total war" (which you seem to mistake for "one AI gives in to another"). What exactly is your criticism regarding this design?
And of course it's fair to gang up on another player if ye provides the opportunity. It happens all the time in multi-player. I do it regularly on single player. Draw neighbours in a war against another civ, joining in, trying to get an advantage. This is strategy. I don't see where your problem is? (Besides, how do you get from "two AIs attacked me at the same time" to "five of six players sontaneously gang up on one"? Does your savegame show this? It doesn't seem so. Your savegame seems to show that *two* AIs gang up on *one* player. Where's your problem with that? You'll be hard pressed to find a multi-player game where this doesn't happen. If you think this to be unfair, I'd recommend to stay away from playing with real human beings.
The point why the other AIs don't capitalize on a weakness you see there should be investigated. There are many possible reasons (good relations, not wanting to lose trade, being too weak themselves etc.), but without seeing the savegame I obviously cannot say much about it yet.
One problem I already see, however, is that you saved too late. If I understood you correctly, there's no way for me to observe the AIs actually declaring war on you, od looking at the sitruation *before* war has been declared to investigate the reasons.
And of course it's fair to gang up on another player if ye provides the opportunity. It happens all the time in multi-player. I do it regularly on single player. Draw neighbours in a war against another civ, joining in, trying to get an advantage. This is strategy. I don't see where your problem is? (Besides, how do you get from "two AIs attacked me at the same time" to "five of six players sontaneously gang up on one"? Does your savegame show this? It doesn't seem so. Your savegame seems to show that *two* AIs gang up on *one* player. Where's your problem with that? You'll be hard pressed to find a multi-player game where this doesn't happen. If you think this to be unfair, I'd recommend to stay away from playing with real human beings.
The point why the other AIs don't capitalize on a weakness you see there should be investigated. There are many possible reasons (good relations, not wanting to lose trade, being too weak themselves etc.), but without seeing the savegame I obviously cannot say much about it yet.

One problem I already see, however, is that you saved too late. If I understood you correctly, there's no way for me to observe the AIs actually declaring war on you, od looking at the sitruation *before* war has been declared to investigate the reasons.