misc questions

[tinkthank]

What ceremony said is of course right.
If I may add to (4):
- There is consensus that "We hereby declare war upon your unholy nation" is unpredictable.
- I think that if you attack the AI (*not*: you attack an independent nation that the AI also happened to have attacked the same turn and conquered too) it will become "more aggressive" towards you at least in the sense that it will want to have its old provinces back.