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.
WahhabismWahhabism (ٱلْوَهَّابِيَةُ) is a reformist movement within Sunni Islam, based on the teachings of 18th century Hanbali cleric Muhammad ibn 'Abd al-Wahhab (1703–1792) The term "Wahhabism" is primarily an exonym; it was not used by Ibn 'Abd al-Wahhab himself or adherents to the movement, who typically prefer to be called "Salafi" (a term also used by followers of other Islamic reform movements). The movement's early followers referred to themselves as Muwahhidun (الموحدون) derived from the term Tawhid (the oneness of God).
AqidahAqidah (ʿaqīdah (ʕɑˈqiːdæ, ʕɑˈqɑːʔɪd), plural عقائد ʿaqāʾid, also rendered ʿaqīda, aqeeda, etc.) is an Islamic term of Arabic origin that literally means "creed". It is also called Islamic creed and Islamic theology. Aqidah go beyond concise statements of faith and may not be part of an ordinary Muslim's religious instruction. It has been distinguished from Iman in "taking the aspects of Iman and extending it to a detail level" often using "human interpretation or sources". Yet in contrast with Iman, Aqidah is not a term in the Qur'an.
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.
TawhidTawhid (, tawḥīd, meaning "oneness of God in Islam (Allāh)"; also romanized as Tawheed, Tavhid, Tauheed or Tevhid) is the indivisible oneness concept of monotheism in Islam. Tawhid is the religion's central and single most important concept, upon which a Muslim's entire religious adherence rests. It unequivocally holds that God in Islam (Arabic: الله Allāh) is one (Al-ʾAḥad) and single (Al-Wāḥid). Tawhid constitutes the foremost article of the Muslim profession of submission.
