interested

I just want to make sure I am doing this right, specifically the second to last sentence. So, would "a kingdom will not support peaceable foreign policies" be the first idea. Then the second idea be UNLESS "it stands to benefit from the absence of war.

Wouldn't the Lawgic then be /benefit from the absence of war --> /not support peace

OR support peace --> benefit from absence of war

I am then confused why they are saying bene-/war because what about the supporting peace part of the sentence I thought that the UNLESS splits the sentence into the two ideas? Is this correct or am I just confusing myself