Algeria–Holy See relations the Holy See and allowed Roman Catholic priests to continue ministering to the remaining Catholics in Algeria. Although Islam is the state religion of Algeria, the Holy See has maintained a comparatively good relationship with the Algerian authorities, with Léon-Étienne Duval being famously recognized as the "bishop of Muslims" after the departure of French colonists. The Algerian state has sought to clearly distinguish between the Catholic religion, which is licit in Algeria with limitations to proselytism, and between Evangelical sects, which are officially forbidden and legally repressed by state powers. However, since a 2006 law limited religious worship to government-approved
Foreign relations of the Holy See diminishing, the number of diplomats accredited to the Holy See grew from sixteen in 1871 to twenty-seven in 1929, even before it again acquired territorial sovereignty with the founding of the State of Vatican City. 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. Two of these concordats were registered at the League of Nations at the request of the countries involved. While bereft of territorial sovereignty, the Holy See also accepted requests to act as arbitrator