The Seeds Of Conflict: Unpacking How The Iran-Iraq War Started

The Iran-Iraq War, a devastating conflict that raged for nearly eight years, left an indelible mark on the Middle East, reshaping regional geopolitics and claiming an astronomical number of lives. Often referred to as the First Persian Gulf War, its origins are complex, rooted deeply in historical grievances, ideological clashes, and the ambitious designs of powerful leaders. Understanding how did the Iran-Iraq War start requires delving into decades of simmering tensions, culminating in a full-scale invasion that shocked the world.

The prolonged military conflict between Iran and Iraq began during the 1980s, specifically on September 22, 1980, when Iraqi armed forces launched a full-scale invasion of western Iran along the countries’ joint border. This brutal war, initiated by Iraq's Saddam Hussein, is noted for its unprecedented use of ballistic missiles, chemical weapons, and attacks on Persian Gulf oil tankers, which significantly curtailed shipping and increased global oil prices. The sheer scale of the conflict and its profound impact necessitate a thorough examination of the multifaceted factors that ignited this catastrophic confrontation.

Table of Contents

Historical Tensions: A Longstanding Feud

To truly grasp how did the Iran-Iraq War start, one must look beyond the immediate events of 1980 and trace the deep-seated animosities that had festered between the two nations for decades. Tensions between Iran and Iraq began almost immediately after the establishment of the latter nation in 1921, in the aftermath of World War I. Both countries, sharing a long and often ill-defined border, found themselves at odds over territorial claims, water rights, and ethnic-religious demographics. The southern border region between Iran and Iraq, in particular, has been a subject of conflict and war for a long time, often serving as a flashpoint for broader disputes.

Post-WWI Border Disputes and National Identity

The geopolitical landscape of the Middle East was redrawn after the collapse of the Ottoman Empire, leading to the creation of new states, including Iraq. This artificial demarcation often disregarded existing ethnic and religious lines, sowing seeds of future discord. A significant point of contention was the Shatt al-Arab waterway (Arvand Rud in Persian), a crucial artery for both countries' oil exports, formed by the confluence of the Tigris and Euphrates rivers. Control over this waterway was fiercely contested, symbolizing sovereignty and economic lifeline. By the 1970s, one enduring source of conflict revolved around this very issue, with numerous treaties and agreements failing to provide a lasting resolution.

Beyond geographical disputes, ethnic and sectarian divisions also played a significant role. The south of Iraq is predominantly Shiite, much like the majority of Iran, while the south of Iran is populated by Arabs, just like Iraq. This demographic overlap meant there was always dispute between the two countries on who controlled that Shiite Arab region. Iran, as the historical Shiite power, often saw itself as the protector of Shiite communities in Iraq, a stance that deeply unnerved Iraq's Sunni-minority Ba'athist regime, which feared Iranian influence among its own Shiite majority. These underlying historical, territorial, and sectarian tensions created a volatile environment, ripe for escalation.

The Catalyst: Iran's 1979 Revolution

While historical grievances laid the groundwork, it was the seismic shift brought about by the 1979 Iranian Revolution that served as the immediate catalyst for the war. The overthrow of the Western-backed Shah Mohammad Reza Pahlavi and the establishment of an Islamic Republic under Ayatollah Ruhollah Khomeini dramatically altered the regional balance of power. Relations with Iran had grown increasingly strained after the Shah was overthrown in 1979, as the new revolutionary government adopted an aggressively anti-Western and anti-monarchist stance, directly challenging the existing order in the Middle East.

The Export of Revolution and Iraq's Ba'athist Concerns

Following the 1979 Iranian Revolution, Iraq’s Ba’athist regime became increasingly concerned about the spread of Shia revolutionary fervor that threatened its secular Sunni rule. Ruhollah Khomeini, the spiritual leader of the Iranian Revolution, proclaimed his policy of exporting the Islamic Revolution, openly calling for the overthrow of "corrupt" regimes in the region, including Saddam Hussein's. Iraq recognized Iran’s new Shiʿi Islamic government, but the Iranian leaders would have nothing to do with the Baʿath regime, which they denounced as secular and illegitimate. This ideological clash was profound: Iran saw itself as the vanguard of a new Islamic order, while Iraq's Ba'athist party, espousing Arab nationalism and secularism, viewed Iran's revolutionary rhetoric as an existential threat to its stability and leadership within the Arab world.

Saddam Hussein, then the undisputed leader of Iraq, perceived Iran's revolutionary government as weak and vulnerable, especially after the purges within its military and the ongoing hostage crisis with the United States. He believed this was a golden opportunity to assert Iraq's dominance in the Gulf, secure control over the Shatt al-Arab, and perhaps even annex Iranian territory, thereby positioning Iraq as the leading Arab power. The internal turmoil in Iran, coupled with its international isolation, presented an irresistible temptation for Saddam to strike. He miscalculated, however, the depth of revolutionary zeal and the resilience of the Iranian people.

Saddam Hussein's Ambitions and Pretexts

Saddam Hussein's decision to invade Iran was driven by a complex mix of personal ambition, strategic calculations, and perceived grievances. He envisioned himself as the new leader of the Arab world, a position he felt was rightfully Iraq's given its oil wealth, military strength, and historical significance. The chaos in post-revolutionary Iran seemed to offer a clear path to achieving this goal. He sought to exploit Iran's internal divisions and perceived military weakness, believing a swift victory would solidify his regime's power and enhance Iraq's regional standing.

Shatt al-Arab and Sovereignty Claims

A primary pretext for the invasion was the long-standing dispute over the Shatt al-Arab waterway. Although the 1975 Algiers Accord had largely settled the border in Iran's favor, granting it sovereignty over the deepest part of the channel (the thalweg line), Saddam Hussein unilaterally abrogated this treaty just days before the invasion. He claimed the entire waterway for Iraq, arguing that the Shah had coerced Iraq into signing the accord. This move was a clear signal of his intent to reclaim what he considered lost Iraqi territory and assert full control over this vital economic artery.

Beyond the Shatt al-Arab, Iraq also had irredentist claims on the Iranian province of Khuzestan, a region rich in oil and populated by a significant Arab minority. Saddam hoped that the Arab population in Khuzestan would rise up in support of the invading Iraqi forces, facilitating a quick and decisive victory. Furthermore, Iran's continuous calls for the overthrow of Saddam Hussein's regime provided Saddam with a convenient narrative of self-defense, framing his invasion as a pre-emptive strike against a hostile and revolutionary neighbor. This combination of territorial ambition, regional leadership aspirations, and ideological conflict ultimately set the stage for the war.

The Spark: September 22, 1980 Invasion

The moment of truth arrived on September 22, 1980. Open warfare began on this date when Iraqi armed forces invaded western Iran along the countries’ joint border. This marked the official commencement of the conflict. It began when Iraq invaded Iran on 22 September 1980, after a long history of border disputes and after Iran demanded the overthrow of Saddam Hussein's regime. Iraqi forces launched a massive ground invasion across a wide front, targeting key cities and oil installations in Khuzestan province, while simultaneously conducting air strikes against Iranian airfields and military bases. Saddam Hussein believed this would be a swift, decisive campaign, perhaps lasting only a few weeks, leading to a negotiated settlement favorable to Iraq.

The initial Iraqi thrust achieved some territorial gains, catching the disorganised Iranian military, still reeling from the revolution and purges, somewhat off guard. However, the anticipated popular uprising among Khuzestan's Arabs did not materialise, and the Iranian revolutionary guards, along with a re-mobilised army, quickly mounted a fierce resistance. What Saddam had envisioned as a quick victory soon devolved into a brutal war of attrition, far exceeding his expectations in terms of duration and devastation. The war between Iran and Iraq commenced with the Iraqi invasion of Iran on 22 September 1980, and would not end until nearly eight years later, with the bilateral acceptance of the UN Security Council Resolution 598 on 20 July 1988.

International Reactions and Early War Dynamics

The international community's reaction to the Iraqi invasion was mixed and often opportunistic. While officially condemning the use of force, many global powers, particularly those in the West and the Arab world, viewed the war through the prism of their own geopolitical interests. Some Arab states, fearing Iran's revolutionary ideology, covertly or overtly supported Iraq, providing financial aid and logistical support. Western nations, wary of Iran's anti-Western stance and the ongoing hostage crisis, often leaned towards Iraq, seeing Saddam Hussein as a bulwark against the spread of radical Shiite Islam.

The early dynamics of the war were characterised by Iraq's initial offensive, followed by Iran's determined counter-offensives. Iran, despite its military disarray, managed to halt the Iraqi advance and, by 1982, had largely pushed Iraqi forces back to the pre-war borders. At this point, many international observers believed the war could end. However, Iran, fueled by revolutionary fervor and a desire to punish the aggressor, refused to accept a ceasefire, demanding the overthrow of Saddam Hussein and reparations. This decision prolonged the conflict for another six years, turning it into one of the longest and bloodiest conventional wars of the 20th century.

The Brutality of Conflict: A Glimpse into the War

The Iran-Iraq War quickly descended into a horrifying spectacle of modern warfare combined with trench warfare reminiscent of World War I. Population centers in both countries were bombed, leading to widespread civilian casualties and internal displacement. Iraq, in particular, employed chemical weapons on a large scale, not only against Iranian troops but also against its own Kurdish population in what became known as the Anfal campaign, a horrific act that drew international condemnation but little effective intervention. These chemical attacks, alongside the use of ballistic missiles, particularly in the "War of the Cities" where Tehran and Baghdad were subjected to missile barrages, showcased the brutal escalation of the conflict.

In the Persian Gulf, a “tanker war” curtailed shipping and increased oil prices, as both sides targeted each other's oil exports and those of their supporters. This maritime conflict drew in international naval forces, further complicating the geopolitical landscape. The war was also marked by massive human wave attacks, particularly by Iran, leading to staggering casualty figures. Estimates of total casualties range from one million to twice that number, making it one of the deadliest conflicts in recent history. The sheer scale of human suffering, the widespread destruction, and the use of banned weapons underscore the immense cost of the decisions made by leaders like Saddam Hussein when determining how did the Iran-Iraq War start.

The Unseen Hands: External Players and Support

While primarily a bilateral conflict, the Iran-Iraq War was significantly influenced by external actors, whose involvement often prolonged the fighting and exacerbated its brutality. Many nations, driven by their own strategic interests, provided support to one side or the other, often covertly. For instance, despite their ideological differences, Israel reportedly helped Iran in its war with Iraq that lasted from 1980 to 1988. Israel supplied Iran with over $500 million in arms, as it saw Iraq’s nuclear ambitions at the time as a greater threat to its existence than the revolutionary regime in Tehran. This paradoxical alliance highlights the complex and often contradictory nature of Middle Eastern geopolitics.

The US Hostage Crisis and its Ramifications

The United States' position was particularly complicated. When the war began, Iran held dozens of American diplomats hostage, and some were even tortured, following the seizure of the U.S. embassy in Tehran. Only after 444 days in captivity did Iran let the American hostages go. This crisis severely strained US-Iran relations, making any overt support for Iran politically untenable. Consequently, the US, along with many Western and Gulf Arab states, indirectly or directly supported Iraq, providing intelligence, financial aid, and military equipment. This support, often justified as a means to contain revolutionary Iran, arguably contributed to Saddam Hussein's ability to sustain the war for so long, despite his initial miscalculations regarding how did the Iran-Iraq War start and its likely duration.

Public opinion in many Western countries often found itself in a moral quandary. While they might revile Ayatollah Ruhollah Khomeini's Iran, they also had little sympathy for Iraq, which they believed started the war. This complex sentiment meant that while official policies might favor Iraq, there was often an underlying unease about supporting a regime known for its human rights abuses and use of chemical weapons. The war thus became a proxy battleground for broader regional and international power struggles, with devastating consequences for the people of Iran and Iraq.

The Ceasefire and Lingering Questions

Active hostilities began with the Iraqi invasion of Iran and lasted for nearly eight years, until the acceptance of United Nations Security Council Resolution 598 by both sides. In 1988, Iran, facing military setbacks, economic exhaustion, and international isolation, finally agreed to a ceasefire, which Ayatollah Khomeini famously described as "drinking from the poisoned chalice." Fighting was ended by a 1988 ceasefire, though the resumption of normal diplomatic relations and the withdrawal of troops did not take place until 1990, after Iraq's invasion of Kuwait prompted a shift in its regional posture.

The Iran-Iraq War concluded without a clear victor, leaving both nations devastated and their borders largely unchanged. The immense human cost, with estimates of total casualties ranging from one million to twice that number, underscored the futility of the prolonged conflict. While the question of how did the Iran-Iraq War start points to Iraq's invasion on September 22, 1980, the underlying causes are far more intricate, woven into the fabric of historical grievances, ideological clashes, and the personal ambitions of leaders. The war serves as a stark reminder of the catastrophic consequences when historical tensions and revolutionary fervor collide with unbridled ambition, leaving a legacy of pain and unresolved issues that continue to shape the Middle East today.

Understanding this conflict is crucial for anyone seeking to comprehend the complex dynamics of the contemporary Middle East. The war's lessons, particularly regarding the dangers of interventionism, the devastating impact of chemical warfare, and the enduring power of ideological conflict, remain highly relevant. If you found this exploration into the origins of the Iran-Iraq War insightful, consider sharing it with others who might benefit from this historical perspective. What other historical conflicts do you believe deserve a deeper dive into their complex beginnings? Share your thoughts in the comments below!

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