It is distinct from the city-state of the Vatican City, over which the Holy See has "full ownership, exclusive dominion, and sovereign authority and jurisdiction".
[6] In spite of the extinction of the Papal States in 1870, and the consequent loss of territorial sovereignty, and in spite of some uncertainty among jurists as to whether it could continue to act as an independent personality in international matters, the Holy See continued in fact to exercise the right to send and receive diplomatic representatives, maintaining relations with states that included the major powers of Russia, Prussia, and Austria-Hungary.
For the first time since relations were broken between the Pope and Queen Elizabeth I of England, a British diplomatic mission to the Holy See was opened in 1914.
[8] The result was that, instead of diminishing, the number of diplomats accredited to the Holy See grew from sixteen in 1870 to twenty-seven in 1929, even before it again acquired territorial sovereignty with the founding of the State of Vatican City.
[9] In the same period, the Holy See concluded a total of twenty-nine concordats and other agreements with states, including Austro-Hungary in 1881, Russia in 1882 and 1907, France in 1886 and 1923.
[10] While bereft of territorial sovereignty, the Holy See also accepted requests to act as arbitrator between countries, including a dispute between Germany and Spain over the Caroline Islands.
In the period of 1870–1929 between the annexation of Rome by the Kingdom of Italy and the ratification of the Lateran Treaty establishing the current Vatican City State, the Holy See was devoid of territory.
[47] It has official formal contacts, without establishing diplomatic relations, with: Afghanistan, Brunei, Somalia and Saudi Arabia.
[48] The Holy See additionally maintains some apostolic delegates to local Catholic Church communities which are not accredited to the governments of the respective states and work only in an unofficial, non-diplomatic capacity.
[11]: 187 During the pontificate of Pope Benedict XVI relations were established with Montenegro (2006), the United Arab Emirates (2007), Botswana (2008), Russia (2009), Malaysia (2011), and South Sudan (2013),[54] and during the pontificate of Pope Francis, diplomatic relations were established with the State of Palestine (2015),[55] Mauritania (2016),[56] Myanmar (2017),[57] and Oman (2023).
[59] Pope Francis met Grand Imam of al-Azhar Ahmad al-Tayyeb in several occasions to improve relations among different faiths.
There have been some important high-level meetings between Saudi and Vatican officials in order to discuss issues and organize dialogue between religions.
An Apostolic Delegation (a papal mission accredited to the Catholic Church in the country but not officially to the Government) still exists on paper and as such is listed in the Annuario Pontificio; but since the end of the Vietnam War admittance of representatives to staff it has not been permitted.
[111] Many of the founders of the European Union were inspired by Catholic ideals, notably Robert Schuman, Alcide de Gasperi, Konrad Adenauer, and Jean Monnet.
Areas of cooperation between Paris and the Holy See have traditionally included education, health care, the struggle against poverty and international diplomacy.
[146] Accordingly, the Holy See has established a Permanent Observer Mission in New York, has sent representatives to all open meetings of the General Assembly and of its Main Committees, and has been able to influence their decisions and recommendations.
Archbishop Jean-Louis Tauran, the Holy See's former Secretary for Relations with States, said that the Vatican City is a "minuscule support-state that guarantees the spiritual freedom of the Pope with the minimum territory.
[149] According to press accounts in Argentina in January 2008, the country's nominee as ambassador, Alberto Iribarne, a Catholic, was rejected on the grounds that he was living with a woman other than the wife from whom he was divorced.
[151] Massimo Franco, author of Parallel Empires, asserted in April 2009 that the Obama administration had put forward three candidates for consideration for the position of United States Ambassador to the Holy See, but each of them had been deemed insufficiently anti-abortion by the Vatican.
This claim was denied by the Holy See's spokesman Federico Lombardi, and was dismissed by former ambassador Thomas Patrick Melady as being in conflict with diplomatic practice.
Vatican sources said that it is not the practice to vet the personal ideas of those who are proposed as ambassadors to the Holy See, though in the case of candidates who are Catholics and who are living with someone, their marital status is taken into account.
This often includes both recognition and privileges for the Catholic Church in a particular country, such as exemptions from certain legal matters and processes, issues such as taxation, as well as the right of a state to influence the selection of bishops within its territory.