AI diplomacy

[Pocus]

ok, there is so many variables that the system is chaotic. I'm not MEE, far from that. I'm playing the AST mod as the Romulans, and I'm just a middle of the road power. The 8472 which are slightly less powerful than me, and the UCP which is a bit more strong than me went to murderous in a matter of turns, and I'm both in MA with them. Nothing really changed in these turns, there is still many things that should piss them off, but not more than before.

Things which surely displease them:
I'm allied with both and they are at war against each other.
i have planets in their territories.

But as said, it was like that for 30+ turns. So why the situation deteriorate suddenly? I like to understand if there is some logic behind that, or if it is just a matter of 'failed dice roll'...