pelled the Buyids dynasty of Shiites that ruled for some time and took over power and control of Baghdad. They ruled as Sultans in the name of the Abbasid caliphs (they saw themselves as being part of the Abbasid regime) Tughril Beg saw himself as the protector of the Abbasid Caliphs.
In 1058, Baghdad was captured by the Fatimids under the Turkish general Abu'l-??rith Arsl?n al-Basasiri, an adherent of the Ismailis along with the 'Uqaylid Quraysh. Not long before the arrival of the Saljuqs in Baghdad, al-Basasiri petitioned to the Fatimid Imam-Caliph al-Mustansir to support him in conquering Baghdad on the Ismaili Imam's behalf. It has recently come to light that the famed Fatimid da'i al-Mu'ayyad al-Shirazi had a direct role in supporting al-Basasiri and helped the general to succeed in taking Maw?il, W?sit and Kufa. Soonafter, By December 1058, a Shi'i adh?n (call to prayer) was implemented in Baghdad and a khutba (sermon) was delivered in the name of the Fatimid Imam-Caliph. Despite his Shi'i inclinations, Al-Basasiri received support from Sunnis and Shi'is alike, for whom opposition to the Saljuq power was a common factor.
On February 10, 1258, Baghdad was captured by the Mongols led by Hulegu, a grandson of Chingiz Khan (Genghis Khan) during the sack of Baghdad. Many quarters were ruined by fire, siege, or looting. The Mongols massacred most of the city's inhabitants, including the caliph Al-Musta'sim, and destroyed large sections of the city. The canals and dykes forming the city's irrigation system were also destroyed. The sack of Baghdad put an end to the Abbasid Caliphate, a blow from which the Islamic civilization never fully recovered.
At this point Baghdad was ruled by the Il-Khanids, the Mongol emperors of Iran. In 1401, Baghdad was again sacked, by Timur ("Tamerlane"). When his forces took Baghdad, he spared almost no one, and ordered that each of his soldiers bring back two severed human heads. It became a provincial capital
