Nobody wanted World War I either, but tense international standoffs have a way of spiraling out of control. And once things get going, once some nervous Marienburg gunner fires on a Dwarven ship, nobody at that point will be able to stop the avalanche.
I want to preserve the possibility of diplomacy and working with the Elves in the future, and of talking Marienburg into standing down when they see their embargo isn't going to accomplish anything.
I'd rather the Dwarves and Empire be economically hurting but avoid war for sure and keep their unengaged military forces available for dealing with any real threats that arise, like orcs and chaos.