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
Legal status of the Holy See of effectiveness", that is, from the fact that other states voluntarily recognize the Holy See, acquiesce having bilateral relations with it, and in fact do so, in a situation where no rule of "ius cogens" is breached. For him, though, the international personality thus conferred is effective only towards those states prepared to enter into diplomatic relations with it. Crawford similarly believes that the recognition of a number of states is important evidence to acknowledge the legal personality of the Holy See, so that, today, it cannot be denied. For a third group of authors, the international legal personality of