Twelver

Twelver Shi'ism is that branch of Shi'a Islam that believes the blood line of Muhammad and his son-in-law Ali was broken with the death of the twelfth Imam. The majority of Shi'a worldwide, an estimated eighty percent, are Twelvers. They make up ninety percent of the modern population of Iran and fifty-five to sixty percent of the population of Iraq, and the majority in Azerbaijan. They make up a large number of the Shi'a in Turkey, Pakistan, Lebanon, Syria, India, Afghanistan and Bahrain.