Well lets review then.
Did Aurvandil steal the regions? No, they were forced on us quite against our will, and the war was irrespective of the regions, it was to punish Julius and to defend our honour, the war didn't affect whether or not we would return the regions, and it's exactly because of that that we didn't hand the regions over before the war started, though for a time I was considering it.
What courtesies did we afford Barca? Well, we forewarned them for over a week of our arrival, they just never bothered to question it. Upon our arrival in Rettlewood, what did we do? We gave them a day to give us terms for the war - effectively giving them the ability to tell us where, when and how this war will be fought, something they refused, so we marched into Rettleville, and after proving our point, we left immediately and offered them peace, and in talks for peace we were perfectly open to compromise and accepting terms Suffete Brackern offered. As far as I am aware, it's not exactly common that an invading army gives their enemy forewarning, then openly offers them the choice of when, where and how they will fight. There isn't really any two ways about it, that is showing courtesy, and we remained perfectly civil and respectful (Discounting the whole having my General sharpen his sword on their senate house business) in our dealings with Barca, it isn't a case of me spinning you bull!@#$ OOC to try and put Aurvandil in a better light.
As for your comments on the Roleplay, well I think that has already been concisely disproved on this thread as being "rude" about their city.