CSI was founded in Switzerland in 1977. CSI initially focused on public relations, interventions and protests, especially in communist countries.

CSI is active in various countries and deals with the following topics, among others: Persecuted Christians, Genocide Warning, Religious Minorities, Sanctions, Slavery Liberation, Human Trafficking, Internal/Refugee Relief, Emergency/Disaster Relief.

CSI consists of an umbrella organization and branches in various countries. The headquarters of the international umbrella organization and the Swiss branch are located in Binz, ZH.