The Ptolemaioi and Karthadastim inevitable war gets kind of ridiculous. When you are playing as either of them, and at least 40 years into the game where you expended, the AI will betray you and send fullstack after fullstack across the desert. The Ptolemaioi doesn't even have a Karthadastim region in their campaign goals. It's not realistic for that period to march entire armies, hundreds of thousands of man, across those regions, to conquer some small settlements, but well, that's the way the AI behaves, so we gotta deal with it.
Back on topic, I find that economic warfare is almost useless, unless we're talking about a homeland region (sabotage their MICs so they can't train their elites) or a far, far away province that maybe could rebel (Alexandreia Eschate for the AS).
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