uat2d
ಠ_ಠ
The Restore the Holy See mission is one of the most badly-designed missions in the game (and that's saying something). A big country getting it is reason enough to load the game as it and cancel the mission.
Or for you to build up your military. Only France and Austria can be a serious threat and if you're going to try and form Italy you're going to have to deal with them sooner or later.