Sectarian violence in Iraq

Sectarian violence in Iraq
Name	Sectarian violence in Iraq
Partof	Iraq War aftermath
Date	2003–present
Place	Iraq
Combatant1	Iraqi insurgency (2003–2011); Islamic State of Iraq and the Levant; al-Qaeda in Iraq
Combatant2	Iraqi Armed Forces; Popular Mobilization Forces; Peshmerga
Casualties	Hundreds of thousands killed; millions displaced

Sectarian violence in Iraq emerged as a defining feature of post-2003 Iraq War instability, reshaping the country's demography, politics, and regional relations. The violence involved competing Shia Islam and Sunni Islam armed groups, Kurdish forces, transnational jihadist networks, and regional patrons, producing cycles of reprisals and mass displacement. Its patterns drew on historical grievances tied to the Ottoman Empire period, the Ba'ath Party era, and the 1991 Gulf War, and were amplified by the 2003 United States invasion of Iraq and subsequent governance challenges.

Background and Historical Context

Iraq's social fabric reflects the coexistence of Arab world identities including Iraqi Shia Arabs, Iraqi Sunni Arabs, and Iraqi Kurds, with significant communities such as Assyrians, Yazidis, and Mandaeans. The 20th-century rise of the Iraqi Communist Party and the 1968 Ba'ath Party coup shaped state repression and patronage that targeted Shia Islam clerical networks centered in Najaf and Karbala. The 1980–1988 Iran–Iraq War and the 1990–1991 Gulf War altered sectarian balances, while sanctions following United Nations Security Council resolutions deepened societal fractures. The 2003 Coalition Provisional Authority dissolution of the Iraq Armed Forces (1921–2003) and de-Ba'athification policies set the stage for insurgency by displaced Iraqi military personnel and former Saddam Hussein loyalists.

Major Periods and Events

The immediate post-2003 insurgency featured Sunni Triangle unrest, the 2004 siege of Fallujah, and the 2005–2007 rise of al-Qaeda in Iraq under leaders like Abu Musab al-Zarqawi. The 2006 Al-Askari Mosque bombing precipitated the 2006–2007 sectarian civil war marked by mass killings in Baghdad neighborhoods and Shi'ite militia and Sunni insurgent reprisals. The 2007 Surge (2007) and the Sons of Iraq program temporarily reduced violence before the 2011 U.S. withdrawal and the 2013–2014 insurgency led to the 2014 Northern Iraq offensive (2014) and the proclamation of the Islamic State of Iraq and the Levant Caliphate in Mosul. The 2014–2017 War in Iraq (2013–2017) saw major operations like Siege of Tikrit (2015) and the Battle of Mosul (2016–17), involving actors including Popular Mobilization Forces and Kurdistan Regional Government forces.

Actors and Motivations

Key actors included Ba'athist organizations, Sunni Islamist groups such as Ansar al-Islam, Islamic State of Iraq and the Levant, and tribal Sahwa movement elements; Shia militias like Mahdi Army led by Muqtada al-Sadr and pro-Iranian groups affiliated with Kata'ib Hezbollah and Asa'ib Ahl al-Haq; Kurdish forces including the Kurdistan Democratic Party and the Patriotic Union of Kurdistan; and international forces such as the United States Department of Defense and Iranian Revolutionary Guard Corps. Motivations ranged from competition over oil fields and bureaucratic posts to revenge for attacks such as the Bombing of the Imam Ali Mosque. Regional rivalries involving Iran and Saudi Arabia further incentivized support for sectarian proxies.

Patterns and Methods of Violence

Violence employed suicide bombings, targeted assassinations, mass executions, ethnic cleansing, and forced displacement, exemplified by attacks on civilian sites like the Al-Askari Mosque and massacres in Sadr City and Yusufiya. Insurgent tactics by al-Qaeda in Iraq and later Islamic State of Iraq and the Levant relied on improvised explosive devices in Ramadi and Fallujah, while Shia militias used death squads and checkpoints in contested districts. Kurdish security operations and clashes in disputed territories like Kirkuk produced ethnicized violence and demographic engineering. The use of social media and propaganda by groups like ISIS and al-Zarqawi transformed recruitment and sectarian framing.

Impact on Population and Society

Sectarian campaigns caused mass casualties, with estimates ranging into the hundreds of thousands, and generated refugee flows to neighboring states such as Jordan and Lebanon as well as internal displacement to Erbil and Sulaymaniyah. Religious minorities—Assyrians, Yazidis, Turkmen, and Mandeans—suffered targeted persecution, exemplified by the Sinjar massacre. Urban segregation increased in cities like Baghdad and Basra, altering electoral politics for parties such as Dawa Party and Islamic Dawa Party. Trauma, loss of cultural heritage including damages to sites like the Great Mosque of al-Nuri in Mosul, and economic disruption impacted reconstruction of Iraqi dinar markets and public services.

Government and Security Responses

Iraqi responses involved the formation of new security institutions such as reorganized Iraqi Security Forces and coordination with the Multinational force in Iraq. The rise of the Popular Mobilization Forces was formalized under Prime Minister Haider al-Abadi and subject to contentious integration efforts overseen by the Iraqi Parliament. Amnesty, reconciliation, and judicial initiatives have involved actors like the High Judicial Council and international bodies including the United Nations Assistance Mission for Iraq. Programs such as the Awakening Councils and disarmament, demobilization, and reintegration efforts sought to incorporate former combatants into provincial structures like those in Anbar Governorate.

International Involvement and Regional Dynamics

Regional powers including Iran, Saudi Arabia, Turkey, and Syria influenced sectarian dynamics through military, financial, and ideological support to proxies and through involvement in diplomatic frameworks such as Baghdad Conference dialogues. Global actors—United States, United Kingdom, France, and Russia—participated via military intervention, counterterrorism assistance, and reconstruction aid channeled through institutions like the World Bank and International Monetary Fund. Cross-border jihadist networks connected Iraqi violence to theaters in Syria, Lebanon, and Jordan, while transnational Shia mobilization referenced sites like Qom and Najaf.

Legacy, Reconciliation, and Reconstruction

After the territorial defeat of ISIS in Iraq, efforts at reconciliation have included return of displaced populations to regions like Nineveh Governorate, legal accountability through courts such as the Central Criminal Court of Iraq, and international humanitarian assistance coordinated by UNAMI. Challenges remain: reintegration of former fighters affiliated with groups like Mahdi Army, demining of liberated areas, restoration of infrastructure in Mosul and Ramadi, and political reforms involving parties like the State of Law Coalition. Long-term stabilization requires addressing disputes over Kirkuk and oil revenue sharing, protecting minority rights, and reconstructing civil institutions damaged during the Iraq insurgency (2011–2013) and subsequent conflicts.

Category:History of Iraq Category:Conflicts in Iraq Category:Post-invasion Iraq