[quote=Ampharos]
I know I'm allied with several German states. I know the German Confederation exists. I can claim ignorance to not having read the Constitution of the German Confederation, however, and I am because it's not a document I've read. I'm sure most people with a decent education can tell you that the German Confederation exists, but do you expect them to have read its constitution? No, that's just silly. This is a roleplay forum, not a history forum.
[/quote]

I think it's fair for anyone with knowledge of the German Confederation's existence to assume that there's some provision in it for war among the member-states.

But it doesn't matter: the constitution of the Confederation isn't what you're arguing about. You're arguing that it's unfair for the German states to get involved on Prussia's side. It isn't, at all, and the fact that you're arguing such a thing is massively hypocritical considering that an hour ago you were trying to do exactly the same thing.