DPS said:
Including the one that I listed, i.e.,
You'd get a CB, but you couldn't force a peace between the attacker and your vassal. You could soundly defeat the attacker, and get a 100% warscore on him, but if you made peace with him, he would still be at war with your vassall. This made it very difficult to actually protect your vassal if he wasn't in your alliance.
Just to be clear here, in general, I have no problem with vassals declaring war. I just think that the particular situation that I pointed our is quite unrealistic.
Yeah, including that one. Like I said, it's not an elegant way to handle it, and there's plenty of room for improvement, but it was reasonable.
If you have vassals you're not allied with, things get tricky and you lose a lot of the tools you had to support them. If it's a one-province vassal, it's often straightforward--let them annex, reconquer, release. Other situations get a lot tougher, if you want to protect the territorial integrity of a multi-province vassal.
But if it's that important, I wonder why I'm not allied--do I have five (or more) multi-province vassals? Have I joined another alliance for strategic reasons? Am I stuck in some older alliance that I don't want to leave, or haven't been able to ban other members from? These are situations which, in the real world, would be tricky, multi-lateral juggling acts that took skill or luck to handle, or involved the acceptance of trade-offs. Which is why, even though I don't think the mechanism is great, the effect is fine.
Incidentally I have, on some occasions, sat on an aggressor at 100% for three years so my vassal gets a white peace. Cursing at the AI for not concluding it sooner, of course
There should be some sort of diplomatic option that lets you make the other country quit attacking your vassal.
Here, I agree 100%. In fact, I'd like to force an opponent to stop attacking any country, vassal or not--the way I play, I'm often concerned about keeping the French or Austrians out of Germany, which is a very realistic goal but almost impossible to simulate in EU2, even using the "guarantee indepence" option.
Better diplo options would help the game in all sorts of ways, if they could be balanced and the AI knew how to respond. Absent them, though, I don't want to see managing huge vassal-empires by proxy become neat and tidy, which seems to be the other solution.