The Second Fitna was the second civil war in the Islamic community during the early Umayyad Caliphate. It followed the death of the first Umayyad caliph Mu'awiya I in 680 and lasted for about twelve years. The war involved three main challenges to the authority of the Umayyad dynasty: the first by Husayn ibn Ali and his supporters, including Sulayman ibn Surad and Mukhtar al-Thaqafi, who rallied to avenge Ali's death in Iraq; the second by Abd Allah ibn al-Zubayr, who proclaimed himself caliph in Mecca and was nominally recognized throughout most of the Caliphate; and the third by the Kharijites, who took over central Arabia and southern Iraq and Persia.