So I was playing as Urbino fighting for my independence for the Papal State and I joined the HRE as soon as I declared, war was going fine, completely annihilated the Papal army and had Roma under siege. Next thing Austria (The Emperor) Enforces Peace against me, a HRE member state fighting for Independence from a non-HRE member state like what could possibly have made the AI think that that's a was a good use of it's time?