Quote Originally Posted by Caravel View Post
You cannot conduct a treason trial on an rival faction leader. The equivalent spy operation when applied to rival faction leaders/heirs/generals is to reveal secret vices.

Just what I said indeed. If you read carefully, you will see that my post is about "discovering vices" and not about framing. I guess the same applies if your spies constantly fail to frame one of your general but in that case inquisitors, assassins and disbanding are much better option.