In a speech on November 16th, Ahmadinejad spoke of his belief in the return of the Twelfth Imam. One of the differences between Sunni and Shiite Islam is that the latter, who dominate Iran and form the majority in Iraq, believe that Allah shielded or hid Muhammad al-Mahdi as the Twelfth Imam until the end of time. Shiites expect the Twelfth Imam, which Jews and Christians would recognize as a messianic figure, to return to save the world when it had descended into chaos. Shiite orthodoxy has it that humans are powerless to encourage the Twelfth Imam to return. However, in Iran a group called the Hojjatieh believe that humans can stir up chaos to encourage him to return. Ayatollah Khomeini banned the group in the early 1980s because they rejected one of the primary commitments of the Iranian revolution: the concept of Vilayat-i Faqih (Guardianship of the Jurist). In other words, they opposed the notion of an Islamic republic because it would hinder the Twelfth Imams return on account of it being too just and peaceful. Today, in addition to the possibility of Ahmadinejad himself being a member (or a former member), the group has connections to Qom ultraconservative cleric Mesbah Yazdi whom Iranians frequently refer to as the "crazed one" and the "crocodile." Four of the twenty-one new cabinet ministers are purportedly Hojjatieh members. Some reports state that cabinet ministers must sign a formal pledge of support for the Twelfth Imam.