The rivalry between Iran and Saudi Arabia is often framed as a Sunni vs Shia conflict, but that alone doesn’t tell the full story. While religious differences are significant, the underlying drivers are geopolitical power, influence and competing visions for the Middle East.
1. Deep Roots: Rival Visions and Regional Power
Both countries aspire to be dominant powers in a strategically vital, oil-rich region:
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Iran positions itself as a revolutionary state spreading its influence — especially among Shia communities — and as a counter-weight to Western allies.
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Saudi Arabia aims to uphold the Sunni monarchy status quo, maintain alliances with Western powers (especially the United States), and act as custodian of Islam’s holy sites.
This contest for leadership is part political, part ideological, and part economic, giving it the feel of a regional cold war played out through influence and proxies rather than direct confrontation.
2. The Theological Dimension: Sunni vs Shia Islam
The Sunni–Shia divide stems from an early dispute over succession after the death of Prophet Muhammad in the 7th century. Shia Muslims believe leadership should pass through the Prophet’s family, while Sunni Muslims support leadership selected through broader consensus. Although both branches share many core beliefs, this difference has long carried political and cultural significance.
Iran is predominantly Shia and has historically positioned itself as the leader of Shia communities. Saudi Arabia, in contrast, practices a strict form of Sunni Islam known as Wahhabism and sees itself as a guardian of Sunni orthodoxy. This theological contrast has helped each side rally support for its political agenda.
However, scholars and analysts note that the religious split is often used to mobilise political support rather than being the root cause of the conflict — the rivalry is first and foremost about state power and influence.
3. How the Rivalry Plays Out: Proxy Wars and Regional Influence
Instead of open war, Iran and Saudi Arabia engage in proxy conflicts across the Middle East. Each supports aligned factions, militias or governments in third countries:
Syria
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Iran has backed President Bashar al-Assad’s government throughout the civil war.
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Saudi Arabia supported various mostly Sunni opposition groups early in the conflict.
This turned Syria into a proxy battlefield for influence between Tehran and Riyadh.
Yemen
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Iran is accused of supporting the Houthi rebels, a group primarily from Yemen’s north with Shia links.
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Saudi Arabia leads a coalition backing the internationally recognised government, seeing the Houthis as an Iranian proxy on its southern border.
That war has become one of the world’s worst humanitarian crises.
Iraq
After the 2003 fall of Saddam Hussein, Iranian influence grew as Shia political parties and militias became powerful. Saudi Arabia has attempted to counterbalance this influence, supporting Sunni factions and political engagement.
Lebanon
Iran supports Hezbollah, a powerful Shia militia and political organisation. Saudi Arabia has often backed opposing politicians and parties, contributing to Lebanon’s complex power struggles.
4. Sectarianism: A Tool, Not the Core Cause
Although religion plays a role, many experts emphasise that the Iran–Saudi conflict is largely geopolitical, with sectarian language used to rally domestic support and justify strategic pursuits.
Both states:
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Use elements of religion to legitimise their agendas
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Justify backing aligned groups based on shared theological identity
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Amplify sectarian rhetoric when convenient
But in reality, competing visions for regional dominance, control of resources, and alliances with global powers are primary drivers of the rivalry.
5. Historical Flashpoints that Deepened the Rift
The 1979 Iranian Revolution
When Iran became an Islamic Republic in 1979, it challenged pro-Western monarchies like Saudi Arabia. Tehran’s revolutionary ideology contrasted sharply with Riyadh’s conservative monarchy, intensifying political and ideological competition.
Iran–Iraq War (1980–1988)
Many Arab states, including Saudi Arabia, supported Iraq against Iran, fearing the spread of revolutionary Shia influence. This war further entrenched mistrust between Riyadh and Tehran.
1987 Mecca Incident
A clash during Hajj rituals between Iranian pilgrims and Saudi security forces deepened sectarian tensions, with rhetoric on both sides turning sharply hostile.
6. Economic and Strategic Stakes
Both countries are major oil producers and compete within OPEC for influence over energy markets and pricing. Saudi Arabia’s economic transformation goals (like Vision 2030) and Iran’s efforts to break sanctions and rival in global markets add another layer to competition.
Control over strategic waterways like the Strait of Hormuz — through which a significant portion of global oil exports pass — gives Iran leverage, while Saudi Arabia’s oil infrastructure underpins its diplomatic and military networks.
In Summary
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Religious difference (Sunni vs Shia) plays a role, but the conflict is mostly about power, security, influence and regional dominance.
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Both Tehran and Riyadh support opposing sides in proxy conflicts across the region, using allied militias and political groups rather than direct military confrontation.
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The rivalry has deep historical, ideological and economic roots, shaped by the Iranian Revolution, regional wars, sectarian flashpoints and broader geopolitical competition.
Key takeaway:
The Iran–Saudi Arabia conflict is best understood not merely as a sectarian dispute but as a multi-layered strategic rivalry in which religion, ideology and geopolitical ambition intersect and reinforce one another.
