I don't know, although the AI hates you, some factions are strangely friendly. The Getai are the most notable example, as I have almost never seen them declare war on any nation first aside from the Sauros, and even that's rare.

Whenever I play as Getai the three factions in Greece are surprisingly reliable neutral factions.....well at least until they're done tearing each other apart.

Oh, also when I played as AS, Baktria, Pontos, and Hayasdan were surprisingly docile. Those three never declared war on me (I was playing H/M though)

I have the same experience as Pahlava, as only AS and Ptolemies aggressively attacked me.

On a side note I'd like to know how aggressive the Gallic factions are, as in Western Europe I only play as Gauls and do not know how aggressive they actually are. Oh and Casse is surprisingly aggressive if you so much as land one unit on the Isles....