[ ] The High King could make it so
This is likely to cause discontent within the Karaz Ankor.
I do not want to cause discontent within the Karaz Ankor. I really don't. Now, amusingly it could be the case that Belegar probably could get Thorgrim to intervene, but... well first of all, the canals are good for Karak Eight Peaks too. And very good for Barak Varr, who is a nearby and thus closeby trading partner of K8P. (... And I guess good for Karak Kadrin and whatever Imperial province is there, because they're building -- or built, a while back -- canals there too.) Secondly, it'd be... well, I don't want to push Thorgrim into doing this.
(And, ultimately, this would be getting done because
Marienburg would have gotten predictably get pissy... I don't want Marienburg to dictate the Empire's and Karaz Ankor's politics to that degree.
[ ] For sufficient concessions
This would weaken the Empire.
To be honest, I don't
want to stop the canals! Everybody was fired up to do this. If the Dwarfs then get asked by the Empire to not do this, they're going to be annoyed. Also, if the canals get built, then both the Karaz Ankor and the Empire benefit greatly; so I don't
want to not make the canals.
Which thus leads us toooo...
[ ] They can make up for the loss in trade
This would weaken the Karaz Ankor and the Empire until the canals are complete.
My currently favored option! How long would it take for the canals to complete anyway? A few more turns or years, right? We could take it until then.
Get the Karaz Ankor to trade more. Get it to use its wealth. Hell, Belegar has
unbelievable amounts of wealth -- he can throw that in behind both the Karaz Ankor and the Empire. The wealth would get reshuffled from hold to hold, and make its way to the Empire.
This way we don't have to worry about causing a war. We don't have to worry about the discontent and knockon-effects that would come from getting Thorgrim to annoy everybody who was looking forward to the canals by getting them to stop.
I think either this one, or the "Barak Varr could help break the blockade" one.
[ ] No, but they could help break the blockade
Barak Varr is the main force behind the project, and would not hesitate to deploy their navy in support of the Empire's to reopen trade routes.
[ ] No, but they would fight beside you
This could easily be spun as Elven sabotage of a Dwarven project. Dwarven pride would have the Throngs march alongside the Imperial Army, and Marienburg could be reclaimed.
Please please please do not cause a war, for the love of god. Please. Don't risk it, either.
Maybe the "ask them to help break any blockade" might be reasonable. I mean, if Marienburg tries to block off the Empire, then... yeah. Would not be unreasonable for the Dwarfs, Barak Varr, to respond.
But the second one, where "Maybe spin it as Elven sabotage"? I do not like the sound of that option. It risks drawing Ulthuan in to politics. It risks enflaming Dwarf passions, and what if they start grumbling about elves and such, and then something starts happening years down the line because Dwarf-Elf relations just got an infusion of tension... No.
[ ] No, they cannot be dissuaded
It's hard to say what this would result in.
Uh... I dunno. Sounds ominous.