Hell, Mussolini made a -deal- with the Vatican, they were his kingmaker. He wasn’t Catholic but he needed their endorsement to survive the 98% Catholic Italy of that era.
Anyway, maybe el papa can show us all the way. Disband his praetorian Swiss guard with all those guns, and let all the people in shithole countries flood in and set up camp inside his walled garden.
It is available as a PDF on line.