Just as I suspected in Christianity. What about Communist North Korea? I've been told on Quora that Christianity and Islam are forbidden there. Is there proof of the contrary?
Something I picked up on Wikipedia about North Korea:
"North Korea is officially an atheist state" "Formally, the Catholic Church has the diocese of Pyongyang and the diocese of Hamhung in North Korea, suffragan dioceses of the archdiocese of Seoul: both North Korean dioceses are considered vacant and the Catholic clergy is absent from the country"
"In North Korea the only recognized Catholic organization is the Association of North Korean Catholics, founded in 1988, which has no relations with the Holy See and is controlled by the government"
"According to official sources, the Catholics belonging to the association are around three thousand, but according to other estimates there are around 800. In the country there is only one authorized Catholic church, the Church of Changchung, located in Pyongyang and managed by the Association of North Korean Catholics; the church does not have ordained priests and the services are celebrated by foreign clergy"
"In North Korea, the only recognized Protestant organization is the Korean Christian Federation" "The association, founded in 1946, officially includes about 10,000 members and is controlled by the government"
"The Korean Christian Federation oversees the only two Protestant churches authorized in the country, namely the Bongsu Church and the Chilgol Church, both located in Pyongyang".
Regarding Islam: "There is only one Shiite mosque in Pyongyang, built at the request of the Iranian ambassador" "it is considered the first and only mosque in the country and welcomes Muslims of all persuasions" "Due to the lack of other mosques in the country, it is also used by the staff of the embassies of other Islamic countries present in North Korea" That's all I could find out.