Playing a campaign as Sonneneve. Cragenwaste inevitably declares war and invades that province with the dryad vale landmark (which captures a human/dwarf unit each turn), so I end up with all these random prisoners that each cost a few coins per turn to maintain. Here's the thing that I don't understand -- how do I get rid of these guys? The only two options available are ransom and execute. If I ransom them, it generates a peace offer (which I don't want, I fully intend to annex their realm for the iron/stone/crystal resources). If I execute them I take a -5 diplomacy hit to every civilized country. Both options suck, how do I unlock the other choices?