== Vatican as ultimate authority on claims about the Vatican == 

 To my knowledge there is no restriction based on your claims that only the Vatican Webiste and its information can be used as an ultimate authority on Vatican subjects on Wikipedia. The website is just an official page. Please, also be aware of the guidelines here: Wikipedia:No legal threats as repeated claims of the type left on the talkpage  of the article seems uncomfortably close. Basicly all you are saying here is that the Vatican can decide it's logo by law and no other publication can contradict that. To me that is just stating an opinion on the legitimacy of the all books and blogs that counter argue facts found on the Vatican webiste. This does not appear on its face to be a violation of the policy, but going beyond that to discuss legality and the Vatican rights of authority could be seen as such. please use caution.