Most visits to the Vatican City are trouble-free but you should be aware of the global risk of indiscriminate international terrorist attacks, which could be against civilian targets, including places frequented by foreigners.
The government of Vatican City has a unique structure. The Pope is the sovereign of the state. Legislative authority is vested in the Pontifical Commission for Vatican City State, a body of cardinals appointed by the Pope for five-year periods.
Most visits to the Vatican City are trouble-free but you should be aware of the global risk of indiscriminate international terrorist attacks, which could be against civilian targets, including places frequented by foreigners.