Re: Rome victory conditions
Press the ?-button on the faction tab of the faction summary screen and the advisor will not only tell you what cities to conquer, but will also highlight them on the campaign map. It's possible that you have to do this more than once, as each press of the ?-button cycles through three display options (highlight raiding targets, highlight conquest targets and no highlighting).
Re: Rome victory conditions
Excellent - thanks for the quick reply! (I pressed the ? button before but got a list of raiding targets - did not even notice them highlighted on the map.)