Environmental and Public Health Consequences of the Iran–Iraq War, 1980–1988Pre-conference analytical brief
Purpose of this briefThis brief provides a neutral environmental and public-health context for the Iran–Iraq War of 1980–1988. It is intended for conference participants who need a shared factual background before discussing war-related pollution, chemical exposure, soils, freshwater systems, oil contamination, explosive remnants of war, disease risks and long-term recovery. It does not provide a political or legal assessment of the war.
1. Conflict and exposure settingThe Iran–Iraq War was one of the longest and most destructive interstate wars of the twentieth century. It was fought across a complex environmental setting: the Shatt al-Arab waterway, the marshes and lowlands of southern Iraq and south-western Iran, oil-producing regions, border cities, agricultural land, deserts, mountain frontiers, ports, tanker routes and densely populated urban areas.For environmental-health analysis, this war is especially important because it combined trench warfare, artillery and missile attacks, chemical weapons, large-scale oil pollution, attacks on shipping and oil infrastructure, landmines, displacement and long-term health consequences for civilians and combatants.The war should therefore not be studied only as a military conflict. It should also be understood as a prolonged environmental-health crisis that affected air, water, soil, food systems, coastal environments, health services and human bodies for decades.
2. Main environmental pathwaysThe principal environmental pathways were:• repeated shelling, trench warfare and destruction of border landscapes;• chemical weapons use, especially sulfur mustard and nerve agents;• contamination of air, soil, clothing, equipment, shelters and medical spaces after chemical attacks;• damage to oil fields, platforms, tankers and port infrastructure;• oil spills and marine pollution in the Persian Gulf;• landmines and unexploded ordnance in border areas;• destruction of homes, farms, irrigation systems and local infrastructure;• displacement and pressure on host communities;• disruption of public health systems, emergency care and long-term rehabilitation;• psychological trauma and chronic disease among survivors.This war is therefore a key case for discussing the intersection of military violence, industrial infrastructure, chemical exposure and long-term public health.
3. Chemical weapons and sulfur mustard exposureThe most distinctive public-health feature of the Iran–Iraq War was the large-scale use of chemical weapons. Iraq used sulfur mustard and nerve agents during the war against Iranian forces and Kurdish populations in northern Iraq. The Nuclear Threat Initiative summarizes that Iraq used tabun and mustard gas on a large scale during the Iran–Iraq War against both Iran and Kurdish populations.Sulfur mustard is a persistent vesicant agent that damages the skin, eyes and respiratory tract. Its long-term effects can include chronic respiratory disease, eye damage, skin disorders, immune effects, disability and psychological trauma. Unlike many conventional battlefield injuries, sulfur mustard exposure can produce delayed and chronic disease many years after the initial attack.For conference discussion, the Iran–Iraq War is one of the most important modern cases of long-term public-health damage from chemical warfare. It shows that chemical weapons are not only acute weapons of mass injury. They can also create chronic medical populations requiring decades of follow-up, specialist care and rehabilitation.
4. Long-term health outcomes among exposed survivorsIranian survivors exposed to sulfur mustard during the war have been the subject of long-term medical research. A large retrospective cohort study of 64,190 Iranian survivors exposed to sulfur mustard reported late-onset health complications and long-term disease burdens. Another study on mortality among people exposed to mustard gas during the Iran–Iraq War found increased mortality from respiratory diseases after 32 years.These findings are important because they shift the discussion from “chemical attack” as a single event to “chemical exposure” as a life-course public-health problem. Survivors may live for decades with chronic respiratory illness, eye disease, skin disease, disability, reduced work capacity, psychological distress and increased need for medical monitoring.For this reason, the health consequences of the war should be discussed not only in terms of immediate casualties, but also in terms of chronic morbidity, disability systems, medical registries, family care burdens and long-term social protection.
5. Halabja and civilian chemical exposureThe chemical attack on Halabja in March 1988 is one of the most widely known chemical attacks on a civilian population in the late twentieth century. It occurred in Iraqi Kurdistan during the final phase of the Iran–Iraq War and caused mass civilian casualties. Reports and later documentation describe the use of chemical agents including mustard gas and nerve agents.For environmental-health analysis, Halabja is important for several reasons. It demonstrates that chemical warfare can affect entire urban communities, not only soldiers. It also raises the problem of mixed exposures: civilians may be exposed through inhalation, skin contact, contaminated clothing, damaged shelters, medical evacuation, polluted indoor spaces and post-attack return to affected areas.Halabja should therefore be treated as a public-health case as well as a historical atrocity. Its relevance for the conference lies in acute mass exposure, medical response under conflict conditions, long-term survivor care, trauma, stigma, documentation and the difficulty of reconstructing exact exposure pathways after chemical attacks.
6. Oil infrastructure, tanker war and marine pollutionThe Iran–Iraq War also affected the Persian Gulf through attacks on oil tankers, platforms and maritime infrastructure. The “Tanker War” phase expanded the environmental geography of the conflict from land battlefields to shipping lanes, ports, offshore platforms and coastal ecosystems.The Nowruz oil field spill in 1983 is one of the most important examples. The spill occurred in the Persian Gulf during the war, and the well could not be quickly capped because the area was located in the war zone. The incident caused a major release of oil into the marine environment and illustrates how war can delay environmental emergency response.Oil pollution affects marine ecosystems through surface slicks, shoreline contamination, toxicity to fish and birds, damage to fisheries, contamination of sediments and long-term hydrocarbon residues. In the semi-enclosed Persian Gulf, oil pollution is especially serious because water exchange is limited and coastal ecosystems are already under pressure from intense shipping, oil extraction, high temperatures and desalination dependence.The Iran–Iraq War should therefore be included in discussions of war-related marine pollution, not only chemical warfare.
7. Shatt al-Arab, wetlands and freshwater systemsThe Shatt al-Arab waterway and surrounding lowlands were central to the war’s geography. This region links river systems, marshlands, ports, agriculture, fishing, date-palm cultivation, drinking-water sources, transport routes and oil infrastructure.War in this zone affected freshwater and wetland systems through shelling, military engineering, damaged settlements, displacement, blocked access, pollution risks and the disruption of local livelihoods. The environmental consequences are difficult to separate from later conflicts, sanctions, state policies, marsh drainage and water-management failures. This means that speakers should be cautious: not every later environmental crisis in southern Iraq can be attributed only to the Iran–Iraq War.However, the war clearly contributed to the militarization and degradation of border water landscapes. It damaged the conditions under which agriculture, fishing, water access and rural settlement could function safely.
8. Landmines, unexploded ordnance and land denialThe Iran–Iraq borderlands remain affected by landmines and explosive remnants of war. Iraq is considered one of the most heavily contaminated countries in the world, and Iran also retains contamination in western and south-western border provinces. These hazards affect farmers, shepherds, children, returnees, construction workers, deminers and rural communities.For environmental-health analysis, mines and UXO are not only weapons left in the ground. They are long-term land-use restrictions. They prevent farming, grazing, road repair, reconstruction, water access and safe return. They also create chronic injury risk and long-term disability.This is one of the strongest comparative lessons of the Iran–Iraq War: a ceasefire may end major fighting, but it does not make land safe. Explosive contamination can preserve the war inside the landscape for decades.
9. Urban attacks, displacement and public healthThe “War of the Cities” involved missile and air attacks on urban centres. These attacks caused civilian casualties, psychological trauma, damage to housing and disruption of essential services. Border cities and towns were also damaged by shelling, occupation, evacuation and repeated military operations.Displacement affected public health through overcrowding, loss of housing, reduced income, interrupted schooling, lack of access to health services, poor sanitation and mental stress. In both Iran and Iraq, families affected by war also faced long-term care burdens for wounded, chemically exposed, disabled or missing relatives.For the conference, the key point is that public health consequences were distributed across combatants, civilians, border communities, urban residents, displaced families, Kurdish communities, medical workers and later generations of caregivers.
10. Mental health, trauma and social consequencesThe Iran–Iraq War produced long-term psychological trauma. Survivors of chemical attacks, veterans, displaced families, bereaved households and civilians exposed to bombardment experienced chronic stress, grief, disability, stigma and social disruption.Chemical exposure adds a special psychological dimension because symptoms can be chronic, visible and socially stigmatizing. Survivors may experience fear of delayed disease, family anxiety, reduced work capacity and long-term dependence on medical systems.For public-health discussion, mental health should not be treated as secondary. It is part of the long-term disease burden created by chemical warfare, displacement, urban attacks and disability.
11. Evidence limitationsThe Iran–Iraq War is well known historically, but the environmental-health evidence is uneven. The evidence is strong for chemical weapons use, sulfur mustard health effects, Halabja, the Nowruz oil spill, mine contamination and long-term survivor morbidity. The evidence is weaker for precise, comprehensive mapping of soil contamination, freshwater contamination, battlefield residues and long-term ecological impacts across all affected regions.Researchers and speakers should distinguish between:• documented chemical weapons use;• documented sulfur mustard health effects;• documented oil pollution incidents;• documented mine and UXO contamination;• plausible but unmeasured battlefield contamination;• direct casualties and long-term morbidity;• acute chemical exposure and chronic disease;• environmental damage from this war and damage from later conflicts.The most cautious formulation is that the Iran–Iraq War produced severe environmental-health consequences through chemical weapons, oil pollution, explosive remnants of war, destruction of border landscapes, displacement, urban attacks and long-term chronic disease among exposed survivors. Specific claims about pollutant concentrations or ecological effects require site-level evidence.
12. Relevance for conference discussionThe Iran–Iraq War is highly relevant for comparative discussion because it combines several forms of war-related environmental-health damage:• large-scale chemical weapons use;• chronic disease among sulfur mustard survivors;• civilian chemical exposure, especially Halabja;• oil pollution and maritime warfare in the Persian Gulf;• damage to Shatt al-Arab border environments;• landmines and unexploded ordnance;• urban missile attacks and psychological trauma;• displacement and long-term disability;• difficulty separating one war’s environmental legacy from later conflicts.The central analytical lesson is that environmental health damage can be acute, chronic and intergenerational. Some harms occur immediately, such as chemical burns, oil spills or explosions. Others unfold slowly through respiratory disease, disability, contaminated sites, inaccessible land, psychological trauma and damaged livelihoods.
13. Suggested framing for speakersSpeakers should avoid reducing the Iran–Iraq War to a general military history. The more useful conference questions are:• What types of chemical exposure occurred, and which are documented?• How should sulfur mustard be discussed as a long-term public-health problem?• What makes Halabja important for civilian exposure analysis?• How did attacks on oil infrastructure and shipping affect the Persian Gulf?• What is known about the Nowruz oil spill and wartime response failure?• How did the war affect the Shatt al-Arab and border water landscapes?• How do mines and UXO transform land use after war?• Which health effects are well documented, and which remain uncertain?• How can this case be compared with Vietnam, Ukraine, Sudan and other wars?The central message is that the Iran–Iraq War should be discussed as a major case of chemical, industrial, marine and land-based environmental-health damage. Its consequences remain visible in contaminated memories, chronic illness, disabled bodies, minefields, damaged border landscapes and the long-term medical needs of exposed survivors.