For over seven decades, the United States built its global military doctrine on a proposition so compelling that it acquired the status of strategic orthodoxy: that overwhelming naval power could project control across distant theatres and shape political outcomes on land. From the Pacific island campaigns of the Second World War to the carrier-led interventions in Iraq, Yugoslavia, and Libya, maritime dominance appeared not merely advantageous but decisive. Yet, in the ongoing war against Iran, that foundational assumption has been fundamentally challenged. Despite unmatched naval superiority, the United States has struggled to secure even the narrow waters of the Strait of Hormuz. Iran, by relying not on sea control but on a doctrine of denial rooted in geography, missiles, drones, and asymmetric warfare, has exposed a deeper truth: the geometry of naval power has changed. This is not a failure of capability—it is a failure of doctrine.

The intellectual foundations of sea power were laid most powerfully by Alfred Thayer Mahan, whose seminal work The Influence of Sea Power upon History argued that maritime dominance was the key determinant of national greatness. Mahan’s thesis was straightforward: control the sea lanes, dominate commerce, and shape the destiny of nations. His ideas found fertile ground in the strategic imagination of rising powers, particularly the United States, which transformed itself into a global maritime hegemon in the twentieth century.

History seemed to vindicate Mahan. The British Empire, often described as a maritime empire par excellence, secured global dominance through control of sea routes and naval chokepoints. During the Napoleonic Wars, Britain’s command of the seas isolated France economically and strategically, culminating in Napoleon’s eventual defeat. Similarly, in the Second World War, the Allied victory was deeply dependent on control of the Atlantic sea lanes, which ensured the uninterrupted flow of men and materiel from the United States to Europe. In the Pacific theatre, the United States employed island-hopping campaigns supported by overwhelming naval and air power to dismantle Japanese defences and project force towards the Japanese mainland.

Yet history also offers cautionary tales—moments when naval power, despite its strength, failed to deliver decisive outcomes. The Vietnam War stands as a stark example. Despite overwhelming naval and air superiority, the United States was unable to impose its will on a determined continental adversary operating within its own terrain. Similarly, the Soviet Union’s experience in Afghanistan revealed the limits of technological and military superiority against a geographically embedded and resilient opponent. Even earlier, during the Gallipoli campaign of the First World War, Allied naval power proved insufficient to secure strategic objectives against a well-defended littoral.

These examples suggest that while naval power can be decisive under certain conditions, it is not universally so. Its effectiveness depends on context—particularly geography, the nature of the adversary, and the integration of land-based capabilities.

This more nuanced understanding was articulated by Julian Corbett, who argued that the purpose of naval power is not control of the sea for its own sake, but its use in support of political objectives, often in conjunction with land forces. Corbett emphasised that maritime power is inherently relational—it must be understood in the context of geography, strategy, and political purpose. In many ways, the Iranian case represents a vindication of Corbett’s insights.

The Strait of Hormuz, through which nearly a fifth of global oil supplies pass, has long been regarded as a manageable chokepoint under American naval protection. The presence of the US Fifth Fleet in Bahrain symbolised not only military capability but strategic assurance—the belief that global commerce could flow uninterrupted under the watchful eye of maritime dominance. The current conflict has shattered that illusion.

Iran has not sought to challenge the United States Navy symmetrically. Instead, it has adopted a strategy of denial—leveraging geography, technology, and asymmetry to impose costs and risks. Anti-ship ballistic and cruise missiles, deployed along Iran’s coastline, extend lethal reach deep into the Gulf. Swarms of drones complicate detection and interception. Naval mines create uncertainty and disrupt shipping. Fast attack craft exploit speed and manoeuvrability in confined waters. Together, these elements form a layered defence that transforms the maritime domain into a contested and hazardous space.

The strategic logic is elegant: to control the sea requires dominance; to deny the sea requires only disruption. By raising the cost of operation and introducing uncertainty, Iran has effectively neutralised the advantages of superior naval power. This is the essence of anti-access/area-denial (A2/AD) warfare—a paradigm that prioritises denial over dominance.

This shift represents a fundamental transformation in the geometry of warfare. Traditionally, maritime power projected force outward, shaping events on land. Today, land-based systems project power outward to contest and deny the sea. The direction of influence has reversed. Geography, long presumed to have been neutralised by technological advancement, has returned as a decisive factor.

The vulnerability of modern naval assets further underscores this shift. Aircraft carriers, once the ultimate symbols of power projection, are increasingly exposed to advanced missile systems. Hypersonic weapons, capable of travelling at speeds exceeding Mach 5, reduce reaction times and challenge existing defence systems. Precision-guided munitions enable long-range targeting with unprecedented accuracy. Undersea warfare has also evolved, with stealth submarines and autonomous underwater vehicles capable of disrupting naval operations and communication cables.

Space-based systems add another layer of vulnerability. Satellites, which provide navigation, communication, and targeting data, are increasingly susceptible to anti-satellite weapons. The integration of space, cyber, and electronic warfare means that naval operations are now part of a multi-domain battlespace where dominance in one domain does not guarantee success in others.

The cumulative effect of these developments is to increase the cost and risk of naval power projection. What was once a relatively secure domain of manoeuvre has become contested, layered, and uncertain.

The implications extend far beyond the Gulf. They call into question the foundational assumptions of the Indo-Pacific strategy, which is predicated on maritime cooperation and naval presence as the primary instruments of stability. Coalitions such as the Quad and AUKUS assume that sea power can deter adversaries and secure critical trade routes. The experience in Hormuz suggests that this assumption may no longer hold universally.

India’s role within this framework highlights the tension. Positioned as a key maritime partner, India is expected to contribute to the balance of power in the Indo-Pacific. Yet India’s strategic reality remains overwhelmingly continental. Its primary security challenges—its borders with China and Pakistan—are rooted on land. The Iranian case reinforces the importance of geography and depth in determining strategic outcomes, suggesting that India’s long-term security will depend more on its continental capabilities than on maritime alignments.

At a broader level, the Iranian experience signals the return of geography as a central determinant of power. For decades, it was believed that technology had overcome geography—that precision weapons, surveillance systems, and global mobility had rendered distance and terrain irrelevant. The battlefield in Hormuz suggests otherwise. Technology has not eliminated geography; it has amplified it. Land-based systems, integrated with terrain and supported by strategic depth, can now contest domains once dominated by maritime power.

This transformation is reinforced by changes in the global economic landscape. The historical linkage between maritime dominance and economic control is being diluted by the emergence of land-based connectivity. Pipelines, railways, and transcontinental corridors are reducing dependence on seaborne trade. China’s Belt and Road Initiative exemplifies this shift, creating networks that enhance connectivity across Eurasia and reduce vulnerability to maritime disruption.

For the United States, this represents a moment of strategic reckoning. The doctrine of maritime dominance must evolve to account for the realities of denial, geography, and technological diffusion. Naval power will remain essential, but it can no longer be assumed to be decisive. It must be integrated into a broader strategy that includes resilience, adaptability, and multi-domain coordination.

For Pakistan, the evolving strategic landscape presents both challenges and opportunities. Located at the intersection of South Asia, Central Asia, and West Asia, Pakistan’s geography positions it as a potential hub of connectivity. By investing in infrastructure, enhancing regional integration, and maintaining strategic balance, Pakistan can leverage the return of geography to its advantage.

The broader lesson of the Iran war is both strategic and philosophical. Power is never absolute; it is always conditioned by context. The belief in the unassailable dominance of maritime power was a product of a particular historical moment—one in which technological superiority aligned with favourable geopolitical conditions. That moment is now giving way to a more complex and contested reality.

History teaches us that doctrines rarely collapse suddenly. They erode gradually, through repeated encounters with reality. The Strait of Hormuz may well become a defining moment in this process—a narrow passage that exposed the limits of a once-dominant idea.

In the final analysis, this is not merely a story about Iran or the United States. It is a story about the enduring relationship between power and geography. And, as always, geography has the final word.

Ambassador G. R. BaluchThe writer is a former ambassador and Director Global and Regional Studies Center at IOBM University Karachi.

© The Nation