“Now we all have to ask ourselves if Vatican City has dominion over any kings of the earth today.”
I believe that historically, they at least claimed to have authority to bestow or withhold kingdoms...
Time will tell.
Which days many RCs long for.
Canons of the Ecumenical Fourth Lateran Council (canon 3), 1215
Secular authorities, whatever office they may hold, shall be admonished and induced and if necessary compelled by ecclesiastical censure, that as they wish to be esteemed and numbered among the faithful, so for the defense of the faith they ought publicly to take an oath that they will strive in good faith and to the best of their ability to exterminate in the territories subject to their jurisdiction all heretics pointed out by the Church; so that whenever anyone shall have assumed authority, whether spiritual or temporal, let him be bound to confirm this decree by oath.
But if a temporal ruler, after having been requested and admonished by the Church, should neglect to cleanse his territory of this heretical foulness, let him be excommunicated by the metropolitan and the other bishops of the province. If he refuses to make satisfaction within a year, let the matter be made known to the supreme pontiff, that he may declare the ruler’s vassals absolved from their allegiance and may offer the territory to be ruled lay Catholics, who on the extermination of the heretics may possess i t without hindrance and preserve it in the purity of faith; the right, however, of the chief ruler is to be respected as long as he offers no obstacle in this matter and permits freedom of action.
The same law is to be observed in regard to those who have no chief rulers (that is, are independent). Catholics who have girded themselves with the cross for the extermination of the heretics, shall enjoy the indulgences and privileges granted to those who go in defense of the Holy Land . (http://www.fordham.edu/halsall/basis/lateran4.asp, emp. mine)
I believe that historically, they at least claimed to have authority to bestow or withhold kingdoms...
The Catholic religion has made that claim for Centuries and has never relinquished the charge...