How flexible is diplomacy?
In my current game as Prussia I attacked the Netherlands in 1854, because that country had DOWed and occupied Hannover. (Hannoverian troops remain alive, in exile in my Prussian lands.) I occupied the four Dutch mainland regions and succesfully stormed their three fortresses in 1855. However, I am unable to attack the Dutch troops inside the Hannoverian areas as the Hannoverians consistently refuse my request for passage, even though their relation with Prussia is about 60. The war score vis a vis the Netherlands is around 80.
When I send a peace proposal to the Netherlands there is no option to propose to the Dutch to leave Hannover or to end the war with Hannover. And there seems to be no other way to remove the Dutch from the Hannoverian lands than to DOW Hannover, in order to be able to enter these lands.
The Dutch also send me peace proposals, but they offer a meagre $66 per year as an indemnity - no counterproposal possible.
What to do? Is this a limitation of the diplomacy system or should I have patience untill they fall on their knees and ask me for some counter proposal...?