Iran from the 1979 is officially an Islamic republic.The Constitution (art. 13) recognizes the presence of three minority religions: Christianity, Hebraism e Zoroastrianism.The religious minorities, both Muslim and non-Muslim, are officially tolerated. The Jewish, Christian and Zoroastrian religions have reserved seats in parliament, as they are officially major religious minorities. Religion in Iran is dominated by the 12th-century Shiite variant of Islam, which is the state religion, with an estimated number of believers ranging between 90% and 95%. From 4% to 8% of the Iranian population is considered instead Sunni, mostly Kurdish and Baluch ethnicity. The remaining 2% is composed of non-Muslim minorities, including Zoroastrians (0,1% of the population), Jews (0,3% of the population), Christians (0,7% of the population), Yezidis, Hindus and the so-called Ahl-e Haqq (yarsan).