Iraqi insurgency

Iraqi insurgency
Conflict	Iraqi insurgency
Place	Iraq
Date	2003–2011 (principal), 2011–2017 (resurgence), 2017–present (low‑level)
Combatant1	Coalition Provisional Authority; United States Department of Defense; United Kingdom Ministry of Defence; Iraqi Armed Forces
Combatant2	Al-Qaeda in Iraq; Islamic State of Iraq and the Levant; Mahdi Army; Ansar al-Islam
Casualties	Estimates vary: tens of thousands killed; hundreds of thousands wounded; millions displaced

Iraqi insurgency

The Iraqi insurgency refers to armed resistance and irregular warfare that followed the 2003 Iraq War invasion and continued through subsequent phases including the rise of Al-Qaeda in Iraq and the Islamic State of Iraq and the Levant (ISIL). It involved a complex web of Sunni Islamists, Shi'a militias, Ba'athist networks, foreign fighters, and criminal groups, engaging in asymmetric attacks against United States Department of Defense forces, United Kingdom Ministry of Defence contingents, Iraqi Armed Forces, and civilian populations. The insurgency reshaped regional dynamics involving Iran, Syria, Turkey, and international organizations such as NATO and the United Nations.

Background and Causes

Multiple factors contributed to the insurgency's emergence after the fall of Saddam Hussein and the dissolution of the Iraqi Army and Ba'ath Party. The Coalition Provisional Authority's policies, including De-Ba'athification and the disbanding of security services, created widespread unemployment among former officers and officials linked to Iraqi Republican Guard and Special Republican Guard. Sectarian mistrust between Sunni Islam and Shia Islam, amplified by historic grievances under Saddam Hussein and political restructuring led by figures associated with Dawa Party and Supreme Council for the Islamic Revolution in Iraq, fueled mobilization. Regional interventions by Iran through the Quds Force and support networks to groups like the Mahdi Army intersected with foreign jihadi recruitment routed via Afghanistan and Pakistan, including veterans of the Soviet–Afghan War.

Major Phases and Timeline

The insurgency unfolded in identifiable phases. From 2003–2006, resistance concentrated in Fallujah, Ramadi, and Mosul, marked by battles such as the First and Second Battle of Fallujah and sieges against Al-Anbar Governorate. The 2006–2008 period saw escalated sectarian violence culminating in the 2006 al-Askari mosque bombing and the surge of 2007, involving troop increases under Operation Iraqi Freedom and officers like General David Petraeus. After a decline 2009–2011, the withdrawal of United States Armed Forces preceded a 2013–2014 resurgence culminating in ISIL's capture of Mosul and declaration of a caliphate under leaders including Abu Bakr al-Baghdadi. The 2014–2017 international campaign, including Operation Inherent Resolve and involvement by Russian Armed Forces in the region, degraded ISIL, with liberations of Tikrit, Fallujah (2016–2017), and Raqqa by coalition partners and local forces. Post‑2017, low‑level insurgency persisted with attacks in Baghdad and Nineveh Governorate.

Key Actors and Factions

Sunni jihadist organizations such as Al-Qaeda in Iraq and later Islamic State of Iraq and the Levant led transnational recruitment and propaganda. Former regime loyalists, including Ba'athist networks linked to figures like Izzat Ibrahim al-Douri, coordinated with tribal insurgents in Anbar Province. Shia militias like the Mahdi Army under Muqtada al-Sadr and groups associated with the Popular Mobilization Forces (al‑Hashd al‑Shaabi) acted as both security actors and sectarian enforcers, with Iranian patronage from elements of the Islamic Revolutionary Guard Corps (Quds Force). External Islamist facilitators included Ayman al-Zawahiri-aligned operatives and foreign battalions from Jordan, Saudi Arabia, and Libya origins. International coalition actors encompassed units from United States Army, British Army, Australian Defence Force, Polish Land Forces, and private contractors such as Blackwater (company).

Tactics and Weapons

Insurgents employed asymmetric tactics: improvised explosive devices (IEDs), suicide bombings, ambushes, sniper attacks, and rocket attacks on bases like Camp Victory. Urban warfare in Fallujah and Mosul featured use of tunnels, VBIEDs, and hostage-taking. Both sides used small arms such as AK-47 rifles, machine guns, and mortars; heavier equipment included captured T-55 and T-72 tanks, and improvised explosive armor-penetrating devices. Airpower from United States Air Force and close air support by A-10 Thunderbolt II and F-16 Fighting Falcon were decisive in sieges, while drones and electronic warfare appeared increasingly during ISIL’s 2014–2017 campaigns.

Impact on Civilians and Society

The insurgency caused mass casualties, sectarian cleansing, and widespread displacement, exemplified by crises in Camp Ashraf and internally displaced persons camps across Kurdistan Region. Cultural heritage suffered from destructions at National Museum of Iraq and antiquities theft in Nineveh (province), including deliberate demolitions at Mosul Museum and Palmyra-style losses in broader regional contexts. The conflict strained institutions such as the Iraqi Central Bank and provoked humanitarian responses from International Committee of the Red Cross, UNHCR, and NGOs, while fueling refugee flows to Jordan, Turkey, and Europe that affected international politics and migration debates tied to treaties like the Dublin Regulation.

International and Coalition Response

Coalition operations under Multi-National Force – Iraq combined counterinsurgency doctrine from figures like General David Petraeus with nation-building efforts by the Coalition Provisional Authority. Diplomatic efforts involved the United Nations Assistance Mission for Iraq (UNAMI), and negotiations with regional powers including Iran and Syria sought to limit cross-border support. Legal and political controversies involved cases such as the Abu Ghraib torture and prisoner abuse scandal and the 2004 Green Zone security challenges. Post-2014, an international coalition led by the United States and endorsed by NATO partners provided airstrikes, training, and equipment to Iraqi Armed Forces and Kurdish Peshmerga.

Aftermath and Legacy

The insurgency reshaped Iraq’s political landscape, empowering sectarian parties such as State of Law Coalition and altering the balance with groups like Patriotic Union of Kurdistan and Kurdistan Democratic Party. ISIL's territorial defeat led to debates on reconciliation, transitional justice, and reintegration of former fighters linked to programs run by the Iraqi High Tribunal and international courts. Long-term consequences include weakened public infrastructure, contested oil fields in Basra and Kirkuk, and enduring regional rivalries involving Iran–Iraq relations and Turkish–Iraqi relations. The insurgency influenced global counterterrorism policy, doctrine in United States Special Operations Command, and legislation such as domestic counterterrorism statutes in coalition states.

Category:Iraq