Abu Bakr al-Baghdadi has only appeared in public once since he declared himself emir (leader) of the Islamic State in June 2014. But this reclusive figure is among the most feared terrorist leaders in the world.
Born Ibrahim Awad Ibrahim al-Badri al-Samarrai in 1971 in the Iraqi city of Samarra, he grew up in a devout, lower-middle-class family that claimed to be able to trace its lineage back to the Prophet Mohammed.
Remembered as quiet, reserved and pious from an early age, al-Baghdadi was never outstandingly academic. He taught the Koran as a teenager to the neighborhood's children and went on to preach at Samarras Imam Ahmad ibn Hanbal Mosque.
At university he joined the Muslim Brotherhood, by this time living with his first wife in Baghdad's down-at-heel Tobchi neighborhood. He taught at the local Haji Zaydan mosque (and became known for his skills in the mosques soccer club, where he was compared to Argentine great Lionel Messi).
He soon proved too radical for the Brotherhood and, following the U.S.-led invasion of Iraq in 2003, helped found a militant group, Jaish Ahl al-Sunnah wal-Jamaah, the Army of the Sunni People, which drew its support from the so-called Sunni Triangle area.
In February 2004 he was arrested by U.S. forces in Fallujah and spent four years in the Camp Bucca prison in southern Iraq, where he met many former Baathists who later became part of his insurgency.
He was released when the camp shut down in 2009, and according to guards at the prison, his parting words were Ill see you guys in New York."
The brutal sectarian war between Iraqs Sunni and Shi'ite populations was just beginning, and al-Baghdadis small group was only one of a growing number of Sunni militias that would eventually unite under the auspices of Al-Qaida.
Abu Musab al-Zarqawi, a Jordanian who pledged allegiance to Osama bin Laden after the U.S.-led invasion of Iraq, formed Al-Qaida in Iraq. Zarqawi was killed in 2006 and late that year Al-Qaida in Iraq became the Islamic State in Iraq.
Al-Baghdadi rose steadily through the group's ranks to become a close aide to its head, Abu Omar al-Baghdadi. Abu Bakrs religious education – in Baghdad he had earned a Ph.D. in Islamic studies – made him particularly useful for an organization trying to establish its credibility.
His cutthroat sensibilities and ruthless political instinct led to his appointment as leader in 2010, following Abu Omars assassination in a joint U.S.-Iraqi operation in April that year. Al-Baghdadi then turned his attention to rebuilding the groups capabilities in Iraq and further afield, creating the Nusra Front to fight against Bashar Assad in Syria.
By 2013, al-Baghdadi had decided to merge his forces into the Islamic State in Iraq and the Levant. The Nusra Front and Al-Qaida protested the merger, but al-Baghdadi went ahead, leading to a split between the movements.
The group seemed unstoppable. Al-Baghdadi was able to provide religious justification for the most rigid interpretations of sharia (Islamic law) as well as the brutal executions of captives and anyone deemed an apostate.
By the end of the year, the group had taken control of the Iraqi city of Fallujah and six months later seized the northern city of Mosul.
In June 2014, al-Baghdadi declared the creation of the Islamic State and appointed himself caliph. His filmed speech in Mosuls Great Mosque provided another insight into his interests; he was seen wearing a flashy wristwatch believed to be either a Rolex, a Sekonda or an Omega Seamaster worth more than $5,000.
Rumors he had been killed or seriously wounded in an airstrike in early 2015 proved unfounded; he continues to wield enormous power over his hundreds of thousands of subjects.
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