To be fair, over the past few decades they have been pushing East quite hard. I'd guess that facing the local Indian great powers at the ragged edges of their lines of supply is less than palatable. Especially with the Romans financing and supplying said great powers as they thrust into the...
Probably not, they both don't seem too interested in colonization in the new world and have the fact that pretty much every great naval power barring the Triunes despise them beyond reason and would do everything in their power to shatter any kind of colonial attempt.
Because, like Iskander, they want to be paid for their efforts. And also as a general screw you guys to their antagonistic neighbours and belligerant subjects in the Levant. Remember that their policy towards Muslims is 'We like ours in Anatolia, but to hell with the rest.' While they will deal...
I don't know. They could go for the region. Loot it hard, then give it to the Anizzah. It would be a client owned region but they wouldn't have the headache of governing it, get a bunch of loot and trade pay, and weaken the powers that hate them some.
I don't think he is taking anything near that path personally. Admitted, Demetrios is a product of the Time of Troubles. And a Rhomanion people who have had some very recent and disturbing memories of an Islamic world that has, both very recently and in the distant past, suffered quite badly...
I'm guessing Carthage the city is fortified enough to hold against attack for long enough that the Romans could bring a large reinforcing army into play. That and thier strong links with local Berber tribes around the city would make supplying any siege a nightmare because of constant harrassing...
In the end Rome was fighting a fundamentally different war from Hannibal. In the classical era war was 'fight a battle or two, maybe besiege a place. Winner gets some concessions from the enemy.' Rinse repeat. With Rome, it was closer to 'We die before we even consider giving an inch. And we...