Sort of. I am finding the AI factions to be extremely hostile. I think that by turn 10 or 12 I had Aquitania, Aedui, Massalia, Emporia, and Gallii all declare war on me. And that is still playing on the lowest difficulty level.
Not sure what to make of this.
If this is the way the game is written, so as to produce difficulty where realistic AI would fail to produce difficulty, I am going to be unhappy. The one bit of evidence of this is that Aquitania and Aedui declared war on me both on turn 5, and the Aquitania referred to the Aedui declaration in theirs. Since there is no game mechanic that would allow the human player to do that (allies with high diplomatic relations will declare war on anyone that their ally declares on, but it would not be possible for the human to obtain an alliance or high diplomatic relations by turn 5). So I would rather think that within the game mechanics, Aedui declared first, and this just colored the wording of the Aquitainia declaration which happened to come the same turn.
On the other hand, if this is just AI factions acting in their self interest, regardless of which opponent is the human, I love it. I started with the largest army, so would be seen as the primary threat. So especially the weak factions like Emporia are just waiting for a chance to benefit from a larger neighbor fighting a war against multiple factions.
None of these, however, had sought cooperation. I do remember reading in the rules, though, that cooperation treaties do not prevent a declaration of war unless diplomatic relations are fairly high. Which struck me as odd.