The 1979 Revolution in Iran, the Rise of Ayatollah Khomeini, and the Limits of External Regime Change

Tuesday 3 March 2026

The 1979 revolution in Iran remains one of the most instructive political upheavals of the modern era. It overturned a heavily armed, externally supported monarchy and replaced it with an ideologically driven theocratic state whose influence continues to shape Middle Eastern geopolitics. The rise to power of Ayatollah Ruhollah Khomeini was not an historical accident, nor was it the product of a single social constituency. It emerged from the convergence of economic grievance, political repression, cultural alienation and a widely shared sense that the Iranian state had become detached from the society she governed. For contemporary debates in Washington and Jerusalem about whether and how Iran might again be transformed from without, the lessons of 1979 are sobering.

The Pahlavi monarchy fell not because she lacked weapons, intelligence services or foreign allies, but because she had exhausted her legitimacy. Mohammad Reza Shah’s ambitious programme of western-style modernisation promised prosperity and global status, yet delivered uneven growth, widening inequality and the systematic exclusion of political participation. The security apparatus, most notoriously SAVAK, succeeded in silencing organised opposition but failed to extinguish resentment. By the late 1970s inflation, unemployment and elite corruption had eroded confidence in the state, while cultural policies perceived as dismissive of religious tradition deepened the divide between ruler and ruled. What began as sporadic protest coalesced into a mass movement precisely because it cut across class and ideological lines.

Khomeini’s role was decisive not because he commanded a majority at the outset, but because he articulated a language that translated diffuse anger into moral clarity. From exile he framed opposition to the Shah not simply as resistance to dictatorship but as resistance to humiliation, dependency and spiritual erosion. His doctrine of velāyat-e faqih (guardianship of the [Islamic] jurist) offered an alternative source of sovereignty grounded in religious authority rather than monarchy or foreign-backed constitutionalism. When he returned to Tehran in February 1979 he did so at the head of a coalition that included liberals, Marxists, nationalists and clerics, all united by the negative objective of ending royal rule.

The speed with which that coalition fractured after victory is one of the revolution’s central lessons. Power did not flow to those who had protested most visibly, but to those who were organisationally disciplined, ideologically coherent and embedded in existing social networks. The clerical establishment possessed mosques, charities, seminaries and informal welfare structures that could be rapidly transformed into instruments of governance. Secular revolutionaries, by contrast, lacked comparable institutional depth. Within months the Islamic Republic had marginalised or eliminated rival centres of authority, embedding religious oversight into the constitution and subordinating elected bodies to clerical guardianship.

This trajectory holds direct relevance for contemporary regime-change thinking. Revolutions rarely yield pluralist outcomes by default. They are contests for institutional control in which the best-organised actors prevail, not necessarily the most liberal or externally palatable ones. Any external power that imagines itself able to midwife a carefully managed transition risks repeating the misjudgements of the late 1970s, when many Western observers assumed Iran was moving towards a constitutional democracy rather than a theocracy.

The international consequences of 1979 were equally far-reaching. Iran’s relationship with the United States collapsed into open hostility, hardened by the embassy seizure and hostage crisis later that year. The revolution embedded anti-Americanism not merely as foreign policy posture but as a pillar of domestic legitimacy. Resistance to Western influence became synonymous with revolutionary authenticity, a narrative that successive Iranian leaders have invoked whenever challenged from within. This fusion of nationalism and ideology has proven remarkably resilient, surviving war with Iraq, sanctions, internal unrest and generational change.

For Israel the Iranian revolution transformed a former regional partner into a strategic adversary. Tehran’s subsequent sponsorship of armed non-state actors and its hostility to Israel’s existence are not incidental features of the post-revolutionary order but products of the regime’s founding worldview. Yet here too history cautions against simplistic assumptions. Iranian foreign policy, while ideologically framed, has consistently been filtered through calculations of regime survival. External pressure has often reinforced hard-line elements by validating their claim that the revolution remains under siege.

Since 1979 Iranian civil society has not stood still. Beneath the surface of clerical dominance Iran has experienced repeated cycles of reformist mobilisation, conservative retrenchment and social adaptation. Urbanisation, expanded education and demographic change have produced a population markedly different from that which overthrew the Shah. Women’s participation in higher education, cultural production and professional life has grown despite legal constraints. Youth movements, labour activism and periodic protest waves attest to persistent dissatisfaction with authoritarian governance. Yet these movements have largely pursued reform rather than revolutionary rupture, shaped by the memory of 1979 and the violence that followed.

This evolution complicates external strategies that rely on the assumption of imminent popular overthrow. Iranian society is fragmented, risk-aware and deeply conscious of the costs of state collapse, particularly after observing the trajectories of Iraq, Syria and Libya. Many Iranians oppose their rulers while simultaneously fearing the consequences of externally catalysed upheaval. Civil society actors tend to resist being instrumentalised by foreign powers, aware that association with outside agendas can delegitimise domestic dissent and invite repression.

From a policy perspective, several implications follow. First, coercive pressure alone is unlikely to generate the kind of political transformation external actors desire. Sanctions, military threats and covert action can weaken states, but they also strengthen narratives of encirclement and betrayal that authoritarian regimes exploit. Second, regime change is not a discrete event but a prolonged struggle over legitimacy and institutions. External intervention may accelerate collapse, but it cannot determine who fills the vacuum. Third, engagement with Iranian society requires patience and restraint. Supporting information flows, educational exchange and economic connectivity may over time do more to shape Iran’s political evolution than dramatic displays of force.

Above all the 1979 revolution reminds us that political change imposed from without rarely produces stable or humane outcomes. Iran’s revolution was indigenous, yet even she generated a system more rigid than many of those she replaced. A revolution engineered or forced by external powers would likely fare worse, entrenching authoritarianism under the banner of sovereignty and resistance. For the United States and Israel the central lesson is not that Iran is immutable, but that transformation follows internal rhythms shaped by history, identity and memory.

Nearly half a century on the shadow of Khomeini still looms over Iranian politics, not only through institutions he created but through the caution his revolution instilled in society itself. Any serious strategy towards Iran must reckon with that inheritance. To ignore it is to risk repeating the very errors that made 1979 such a turning point in the first place.