Islamic State of Iraq and the Levant (ISIL) — overview, history and impact
ISIL (also ISIS, IS, or Daesh) is a Salafi‑jihadist militant group that declared a caliphate in 2014. This article outlines its origins, ideology, territorial rule, tactics, affiliates and international response.
Overview
The Islamic State of Iraq and the Levant is an extremist militant movement commonly known by the acronyms ISIL, ISIS or simply IS; in Arabic it is often called "Daesh". Scholars and governments usually classify it as a Salafi‑jihadist organisation that combined violent insurgency, state‑building efforts and transnational propaganda. The group has operated across parts of Iraq, Syria and beyond, including affiliate networks reported in Libya and Nigeria. Its leaders proclaimed an independent state and declared a caliphate over territories it controlled in 2014, a claim that was widely rejected internationally.
Origins and development
ISIL emerged from the violent aftermath of the 2003 invasion of Iraq and the wider regional turmoil. Its core lineage traces to groups that fought in post‑2003 Iraq and later expanded into Syria during the civil war. For a time it was affiliated with Al‑Qaeda, but that relationship broke down amid strategic and leadership disagreements; the two groups formally split in 2014. The organisation consolidated control over populated areas in 2013–2015 before losing most of its territorial strongholds by the late 2010s as a result of local and international military campaigns.
Ideology and organisation
ISIL adhered to an extreme interpretation of Sunni Islam influenced by Salafi currents and strands commonly associated with Wahhabism. It rejected rival sects and governments, particularly opposing Shiism in sectarian rhetoric and policy. The movement portrayed its goals in millenarian terms, sought to impose strict social rules in areas it governed, and used dramatic propaganda to recruit foreign fighters and supporters. It also exploited local grievances, governance vacuums and violent networks to expand its reach.
Territory, governance and methods
At its height the group attempted rudimentary state institutions: administering courts, policing, taxation and basic services in some occupied districts. Its rule was marked by extreme violence against combatants and civilians, documented human rights abuses, forced population displacements and the destruction of cultural heritage. Tactics combined conventional battlefield operations, guerrilla attacks, suicide bombings and a sophisticated media and online outreach effort that glamorised fighters and offered logistical and ideological guidance to recruits.
Affiliates, regional presence and tactics
- Regional affiliates and self‑declared provinces appeared in several countries, including local groups that pledged allegiance to IS leadership.
- Recruitment drew on foreign fighters, local recruits and online propaganda; promises made to recruits were part of its portrayal rather than reliable incentives.
- Its enemies included state militaries, rival militias, and international coalitions; responses combined military pressure with efforts to disrupt financing and recruitment.
International reaction and current status
ISIL’s actions prompted a wide international response: military campaigns by a multinational coalition, regional operations by state and non‑state actors, and legal and humanitarian initiatives to address atrocities. Many countries and international bodies designated it a terrorist organisation. After losing most territorial control, the group has persisted as an insurgency and through dispersed affiliates; the threat now is mainly from decentralised cells, clandestine networks and lone‑actor attacks rather than open territorial rule.
Notable distinctions and legacy
ISIL is distinct from other jihadi organisations in its combination of state‑building ambitions and global propaganda, its rapid territorial expansion in the mid‑2010s, and the speed of the international response that eroded its territorial base. Its emergence reshaped regional conflict dynamics, influenced counter‑terrorism policies, and left long‑term humanitarian, legal and reconstruction challenges in affected areas. For further context on ideology, regional conflict and counter‑terrorism measures see links on jihadist movements, the Wahhabi lineage debates, the Iraq War background and other analyses referenced here: Wahhabism, Al‑Qaeda, caliphate, Shiism, Libya, Nigeria, Syria, and Iraq.
Names
Since the end of June 2014, the organization has only called itself Islamic State. According to political scientist Volker Perthes, the organization, which he characterizes as a "jihadist state-building project," wants to emphasize that it wants to expand beyond Iraq and the Levant by abandoning former name components.
Until the end of 2014, the organization called itself "Islamic State in Iraq and Syria" (Arabic الدولة الإسلامية في العراق والشام, DMG ad-daula al-islāmiyya fī l-ʿIrāq wa-š-Šām; can also be translated as "... in the Levant" or "... in Greater Syria"), from which the common abbreviations ISIS, ISIL, and ISIG are also derived. A foreign term is the rather negative abbreviation Daesh (داعش, DMG dāʿiš, also spelled Daesh, Da'ish, or Daaish), coined in 2013 by the Syrian activist Khaled al-Haj Salih, which is derived from the initial Arabic letters and is widespread in the Arabic-speaking world.
The abbreviation داعش, DMG dā'iš 'ISIS' ("Islamic State in Iraq and Syria") looks similar in Arabic script to the term داعس, DMG dāʿis 'one who tramples something underfoot'. Therefore, this abbreviation is forbidden within IS-occupied territories, and there is a threat of punishment if it is used. In numerous Middle Eastern countries, however, this abbreviation has been adopted into the local vocabulary. This is intended to deliberately counter the organization's own name, which has positive connotations in the Islamic sense, and to avoid a direct association with Islam.
The IS does not speak of borders, but of "fronts", thus fulfilling an important characteristic of an openly aspired empire. Further, former names of the organization or its predecessors (JTJ, Az-Zarqawi network, TQJBR, AQI) are given in the History section.
Funding
IS was considered the richest terrorist organization in the world with an estimated fortune of two billion US dollars (as of January 2015). During the conquest of Mosul and the looting of the central bank, 429 million US dollars alone ended up in the hands of the IS in June 2014. The IS "business model" was based on several pillars:
- Oil: IS was largely financed by the revenue from the sale of crude oil from captured oil fields. Until the first air strikes on oil fields in October 2014, oil was produced and sold daily for 3 million US dollars. By the end of 2014, the figures had dropped to around 360,000 US dollars per day.
- Looting: An additional source of income was the sale of antique finds from looted excavations at archaeological sites and the looting of museums. By the end of 2014, archaeological finds from Syria alone worth 30 million US dollars are said to have been smuggled into the West and brought here into the art trade with forged papers.
- Ransom and slavery: Claims from kidnappings as well as the "auctioning" of children and women (especially captured Yazidis and Christians) on slave markets represent another source of income. Girls and women between the ages of 10 and 20 were auctioned for the equivalent of 68 euros; children up to the age of 9 fetched prices as high as the equivalent of 135 euros. Abducted Western hostages were released for between 3 and 5 million US dollars.
- Donations: The IS is financed by donations from wealthy private individuals, religious foundations and mosque associations, especially from Saudi Arabia and Qatar.
- Taxes: The IS collects taxes from traders, which are 10% each for sales and property taxes, as well as customs duties (between $200 and $500 per shipment). In addition, the IS received rental income for over 20,000 apartments and shops in Mosul amounting to 3 million US dollars per month. The IS kept detailed records of all transactions.
The Islamic State proclaims on its websites and social networks the introduction of a gold dinar, which is successively put into circulation.
Questions and answers
Q: What is ISIL?
A: ISIL is a Wahhabi jihadist militant and terrorist group also known as the Islamic State of Iraq and the Levant or the Islamic State of Iraq and Syria.
Q: What is another name for ISIL?
A: In Arabic, ISIL is often called "Daesh".
Q: In which countries does ISIL operate?
A: ISIL operates in Libya, Nigeria, Syria, and a small part of northern Iraq.
Q: What is the aim of ISIL?
A: The aim of ISIL is to establish a caliphate in the Sunni majority regions of Iraq, later expanding this to include Syria.
Q: What is the recruitment strategy of ISIL?
A: The group recruits new members by promising them sex slaves or cheap marriages.
Q: What religious sect influences ISIL?
A: ISIL is influenced by the Wahhabi Sect of Islam.
Q: What is the opinion of ISIL towards Shiism?
A: ISIL is opposed to Shiism and has been described as "Shiaphobic".
Related articles
Author
AlegsaOnline.com Islamic State of Iraq and the Levant (ISIL) — overview, history and impact Leandro Alegsa
URL: https://en.alegsaonline.com/art/48409
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