[anonymity]

I don't see what's wrong with what happened.

a) Fomoria believes he can improve his position so that it's more likely to win. He invades Pythium
b) Pythium believes that neither he nor Fomoria can win. He sets himself AI

I don't really understand what's wrong with what's happened here. You pick on the weak and the busy, and quietly build up advantages in research and gem income. If diplo and war doesn't go someone's way, they are well within their rights to set themselves AI. Nothing wrong with either action. Let's keep playing.