There is one word that describes the main impulse of Islam: tawhid meaning making one, or, unicity. This word can be rephrased as to mean: there is no god but God. There is a paradox here, this absolute insistence that it is unicity above all that defines divinity appears in contrast with the disunity observable in the Muslim world. ‘Divine unicity’ looks at this concept and at the sectarian divisions in the Islamic faith. What is Shi'ism? What do the various branches of Shi'ism believe? What is the difference between Shi'ism and Sufism?