Fair point. I am wondering how the plan got sold to Carelia's nobles. So you take two duchies away from one of your neighbors, and then give away two of your own duchies? That's a net gain of, err, zero duchies. All risk for no gain. ...
If you reduce the strength of your enemy while holding your own strength steady, then you have greatly increased your relative strength compared to your enemy's. In the most basic terms: 5 CE duchies vs. 4 Carelia duchies means CE is stronger. 3 CE duchies vs. 4 Carelia duchies means Carelia is stronger, even though Carelia still has only 4 duchies.
Unless the plan was to take Skalk, Nida, and then keep going? ]Was there a war plan beyond "down with CE!"?
Dunno. I suppose if we had managed to actually accomplish the "down with CE" part, we would have decided what to do from there
