History has a habit of repeating itself, not in identical form but in familiar patterns. The United States learned one of its most painful strategic lessons in Vietnam. Yet, half a century later, Washington appears to be flirting with the same mistake in a very different theatre.

The geography has changed. The actors have changed. The weapons have certainly changed. What has not changed is the underlying miscalculation that military dominance automatically translates into strategic control.

The Vietnam War began with a conviction that seemed perfectly logical to American policymakers at the time. If communism spread through Southeast Asia, it would do so like a line of falling dominoes. Containment, therefore, required intervention.

The United States first sent advisers, then money and equipment, and eventually hundreds of thousands of troops. By 1969, more than 540,000 American soldiers were deployed in Vietnam. On paper, the United States possessed overwhelming superiority. Its air force controlled the skies. Its navy dominated the seas. Its army had unmatched firepower and logistics. Yet, despite winning most conventional engagements, the United States failed to achieve its central objective. The communist government in North Vietnam ultimately prevailed, and the country was reunified under its rule in 1975 after the fall of Saigon.

The explanation for that outcome lies in a misreading that ran through the entire American strategy. Washington treated the conflict primarily as a Cold War contest between communism and capitalism. For the Vietnamese leadership and many of its fighters, the struggle was something else entirely. It was a national war against foreign domination. The willingness to absorb extraordinary losses flowed from that conviction.

Military superiority could not compensate for that political reality. This distinction between battlefield power and strategic outcome is crucial. The United States dropped more bombs on Vietnam, Laos and Cambodia than were used in the whole of the Second World War. Yet the bombing campaigns did not break the political will of the North Vietnamese state. The Ho Chi Minh Trail continued to function despite relentless air strikes.

Guerrilla networks regenerated faster than they could be destroyed. Tactical victories piled up, but the strategic picture deteriorated. In that sense, Vietnam remains one of the most important cautionary episodes in modern military history.

Today, the United States confronts a very different adversary in Iran. The Islamic Republic is not a guerrilla movement embedded in jungles and rice paddies. It is a sovereign state with a complex military structure, missile forces, naval assets, and a network of regional partners and proxies. Yet the central danger for Washington lies in a familiar assumption.

Once again, American planners seem tempted to believe that technological superiority can force a rapid political outcome. Iran's deterrence strategy suggests otherwise. For decades, Tehran has invested in what military analysts call asymmetric warfare. Instead of trying to match the United States ship for ship or aircraft for aircraft, Iran has developed capabilities that impose costs in indirect ways.

Ballistic and cruise missiles, armed drones, naval mines, fast attack craft and coastal missile batteries form part of this system. Just as important is geography. The Strait of Hormuz, through which roughly a fifth of the world’s oil supply passes, sits at Iran's doorstep. This geographic fact alone alters the strategic equation.

Iran does not need to defeat the United States in open battle. It merely needs to disrupt the flow of energy and trade (as it is doing now) long enough to generate an economic shock. Even limited interference with shipping can send oil prices surging, raise insurance costs for tankers and inject panic into global markets.

In other words, Iran possesses the ability to escalate economically even when it cannot dominate militarily. That is the essence of layered deterrence. Washington's difficulty lies in translating military strikes into political leverage. Precision air strikes can destroy facilities.

Naval forces can patrol sea lanes. Yet none of these actions automatically produces submission. A state that is willing to endure economic pain and continue retaliating can stretch the conflict into a prolonged contest of endurance.

Vietnam demonstrated how dangerous such contests can become. In that war, the United States believed escalation would eventually force Hanoi to negotiate on American terms. Instead, each escalation created new complexities. Bombing North Vietnam widened the war into Laos and Cambodia.

Increased troop deployments provoked deeper domestic opposition inside the United States. The longer the war lasted, the harder it became to define what victory actually meant.

Iran presents a similar dilemma, though through different mechanisms. Direct confrontation risks expanding across multiple theatres. Iranian missile capabilities reach American bases across the Gulf. Armed groups aligned with Tehran operate in Iraq, Syria, Lebanon and Yemen. The global energy system remains highly sensitive to disruption in the Gulf region. Any prolonged conflict, therefore, carries consequences far beyond the immediate battlefield.

The political dimension is equally significant. Iran's leadership has spent decades preparing its population for confrontation with the United States. Economic sanctions, regional tensions and ideological messaging have created a narrative of resistance. That narrative reinforces the State's willingness to absorb pressure rather than capitulate quickly.

This does not mean Iran is invulnerable. Its economy is fragile. Its political system contains internal divisions. Its military would struggle in a direct conventional war against the United States. Yet vulnerability does not equal strategic surrender. The critical question is not whether Washington can inflict damage. It clearly can. The question is whether damage produces the political outcome Washington seeks.

Vietnam answered that question once already. The United States won countless battles in that war. Yet each battlefield success left the fundamental problem unresolved. The adversary's political will remained intact, and the cost of continuing the conflict steadily rose for Washington. Domestic opposition grew. International criticism intensified. Eventually, American leaders concluded that the war could not be won at an acceptable cost.

Iran poses the risk of a different but related trap. Escalation risks widening the conflict and destabilising the global economy. Withdrawal without clear gains risks projecting weakness. Between those two dangers lies a narrow path where every move carries consequences that may exceed the intended objective.

That is precisely the strategic terrain where great powers often stumble. The lesson of Vietnam was never simply that the United States lost a war in Southeast Asia. The deeper lesson was about the limits of power itself. Military superiority does not erase geography. It does not erase nationalism. It does not erase an adversary's willingness to endure hardship. Those limits remain as real today as they were half a century ago.

If Washington ignores them again, the result may not look exactly like Vietnam. History rarely repeats itself so neatly. But the underlying pattern of miscalculation could return in a form that is just as costly and just as difficult to escape.

The author is the recipient of the National Award for Best Narration and an independent political analyst.

© Mathrubhumi English