To resolve the speculation about whether Assyria beelined to Collective Rule (which is likely the case), the OP should go to Global Politics screen and report back what policies Assyria adopted.
Ok i have played on since then. So cannot give you an accurrate position about when exactly it happened. But:
Spoiler :
And the current state of play:
Spoiler :
I am at war with Ashy (fairly predictable). I think my current plan is probably defend and then burn his 2 cities once i hit gun powder/cannons.