Islamism
Qutbism

Qutbism refers to the Jihadist ideology formulated by Sayyid Qutb, (an influential figure of the Muslim Brotherhood in Egypt during the 50s and 60s). Qutbism argued that not only was sharia essential for Islam, but that since it was not in force, Islam did not really exist in the Muslim world, which was in Jahiliyya (the state of pre-Islamic ignorance). To remedy this situation he urged a two-pronged attack of 1) preaching to convert, and 2) jihad to forcibly eliminate the "structures" of Jahiliyya. Defensive jihad against Jahiliyya Muslim governments would not be enough. "Truth and falsehood cannot coexist on this earth", so offensive Jihad was needed to eliminate Jahiliyya not only from the Islamic homeland but from the face of the Earth. In addition, vigilance against Western and Jewish conspiracies against Islam would-be needed.

Although Qutb was executed before he could fully spell out his ideology, his ideas were disseminated and expanded on by the later generations, among them Abdullah Yusuf Azzam and Ayman Al-Zawahiri, who was a student of Qutb's brother Muhammad Qutb and later became a mentor of Osama bin Laden. Al-Zawahiri helped to pass on stories of "the purity of Qutb's character" and persecution he suffered, and played an extensive role in the normalization of offensive Jihad among followers of Qutb.
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