Islamic extremismIslamic extremism, Islamist extremism, or radical Islam, is used in reference to extremist beliefs and behaviors which are associated with the far-right ideology in Islam. These are controversial terms with varying definitions, ranging from academic understandings to the idea that all ideologies other than Islam have failed and are inferior to Islam. These terms can also be used in reference to other sects of Islam that do not share such beliefs.
JihadismJihadism is a neologism for militant Islamic movements that are perceived as existentially threatening to the West. It has been applied to various insurgent Islamic extremist, militant Islamist, and terrorist individuals and organizations whose ideologies are based on the Islamic notion of jihad. It has also been applied to various Islamic empires in history, such as the Umayyad Caliphate and the Ottoman Empire, who extensively campaigned against non-Muslim nations in the name of jihad.
Islamic StateThe Islamic State (IS), also known as the Islamic State of Iraq and the Levant (ISIL; ˈaɪsᵻl), Islamic State of Iraq and Syria (ISIS; ˈaɪsᵻs), and by its Arabic acronym Da'ish or Daesh (داعش, Dāʿish, ˈdaːʕɪʃ), is a transnational militant Islamist terrorist group and former unrecognized quasi-state that follows the Salafi jihadist branch of Sunni Islam. It was founded by Abu Musab al-Zarqawi in 1999 and gained global prominence in 2014, when it captured a large amount of Iraqi territory, and took advantage of the civil war in Syria to take control of chunks of territory in Eastern Syria.
Political aspects of IslamPolitical aspects of Islam are derived from the Quran, ḥadīth literature, and sunnah (accounts of the sayings and living habits attributed to the Islamic prophet Muhammad during his lifetime), the history of Islam, and elements of political movements outside Islam. Traditional political concepts in Islam include leadership by elected or selected successors to Muhammad, known as Caliphs in Sunnī Islam and Imams in Shīʿa Islam; the importance of following the Islamic law (sharīʿa); the duty of rulers to seek consultation (shūrā) from their subjects; and the importance of rebuking unjust rulers.
QutbismQutbism (al-Quṭbīyah) is an Islamist ideology which was developed by Sayyid Qutb, a leading member of the Muslim Brotherhood who was executed by the Egyptian government in 1966. It has been described as advancing the extremist, jihadist ideology of propagating "offensive jihad" – waging jihad in conquest – "armed jihad in the advance of Islam", and simply "Islamic-based terrorism". Sayyid Qutb could be said to have founded the actual movement of radical Islam.
Salafi jihadismSalafi jihadism, also known as Revolutionary Salafism or jihadist-Salafism, is a religious-political Sunni Islamist ideology, seeking to establish a global caliphate, characterized by the advocacy of "physical" (military) jihadist attacks on non-Muslim and (takfired) Muslim targets, and the Salafist interpretation of sacred Islamic texts "in their most literal, traditional sense", to bring about the return to (what adherents believe to be) "true Islam".
Boko HaramBoko Haram, officially known as Jamā'at Ahl as-Sunnah lid-Da'wah wa'l-Jihād (جماعة أهل السنة للدعوة والجهاد), is an Islamist militant organization based in northeastern Nigeria, which is also active in Chad, Niger, northern Cameroon, and Mali. Boko Haram was the world's deadliest terror group during part of the mid-2010s according to the Global Terrorism Index. In 2016, the group split, resulting in the emergence of a hostile faction known as the Islamic State's West Africa Province.
Apostasy in IslamApostasy in Islam (ردة, or ارتداد, ) is commonly defined as the abandonment of Islam by a Muslim, in thought, word, or through deed. It includes not only explicit renunciations of the Islamic faith by converting to another religion or abandoning religion, but also blasphemy or heresy by those who consider themselves Muslims, through any action or utterance which implies unbelief, including those who deny a "fundamental tenet or creed" of Islam, (such as suggesting jinn are not real).
Islamic schools and branchesIslamic schools and branches have different understandings of Islam. There are many different sects or denominations, schools of Islamic jurisprudence, and schools of Islamic theology, or ʿaqīdah (creed). Within Islamic groups themselves there may be differences, such as different orders (tariqa) within Sufism, and within Sunnī Islam different schools of theology (Atharī, Ashʿarī, Māturīdī) and jurisprudence (Ḥanafī, Mālikī, Shāfiʿī, Ḥanbalī).
TakfirTakfir or takfīr (takfīr) is an Arabic and Islamic term which denotes excommunication from Islam of one Muslim by another, i.e. accusing another Muslim to be an apostate. The word is found neither in the Quran nor in the ḥadīth literature; instead, kufr ("unbelief") and kāfir ("unbeliever") and other terms employing the same triliteral root k-f-r appear. "The word takfīr was introduced in the post-Quranic period and was first done by the Khawarij", according to J. E. Campo. The act which precipitates takfīr is termed mukaffir.