Iran’s attempt to turn the Strait of Hormuz into an instrument of strategic coercion may have given Tehran something years of missile development, proxy warfare and nuclear brinkmanship never quite achieved: the ability to impose an immediate economic cost on countries far beyond the battlefield. Yet this newfound leverage contains the seeds of its own erosion.
The Strait is extraordinarily important because a substantial share of the world’s traded oil and liquefied natural gas passes through its narrow waters. Disrupting that traffic raises freight and insurance costs, unsettles energy markets and transmits the consequences of war to economies thousands of kilometres away. Tehran can therefore exploit geography to compensate for its overwhelming conventional military disadvantage against the United States. But leverage is not the same as victory.
Iran now confronts an unenviable choice. A negotiated reopening of the waterway, accompanied by nuclear concessions and stronger international inspections, could relieve military and economic pressure but allow Washington to claim that force succeeded. Escalation against American forces, commercial shipping or Gulf infrastructure might increase bargaining pressure, but could also widen the coalition confronting Iran. Prolonged, calibrated disruption offers a middle course, although one increasingly difficult to control.
The deeper problem is structural. Hormuz gives Iran power precisely because other countries depend upon it. Persistent weaponization creates powerful incentives to diminish that dependence. Saudi Arabia and the United Arab Emirates already possess pipeline capacity allowing some crude exports to bypass the Strait. Continued insecurity would encourage further investment in pipelines, alternative terminals, strategic reserves and diversified energy supplies. What serves as an Iranian pressure point today could gradually become less indispensable. Time therefore cuts both ways. Tehran may calculate that an adversary accustomed to short political horizons will eventually tire of an expensive conflict.
The Islamic Republic has repeatedly demonstrated an ability to absorb sanctions and external pressure. But endurance is not cost-free. War damage, inflation, disrupted commerce, unemployment and failing infrastructure impose cumulative burdens on a population whose tolerance cannot simply be assumed. There is also uncertainty at the centre of Iranian power. The succession from Ali Khamenei to Mojtaba Khamenei has occurred amid war rather than stability. Civilian officials seeking economic relief, ideological hardliners resisting concessions and the Revolutionary Guards protecting their military and regional influence need not define victory in the same way.
Strategic ambiguity becomes dangerous when it is unclear who ultimately controls escalation. Washington faces its own dilemma. Military superiority can punish Iran but cannot guarantee political submission without costs that rise sharply with prolonged war. Tehran’s objective may consequently be less to defeat the United States than to demonstrate that coercing Iran is prohibitively expensive. That makes Hormuz both Iran’s strongest bargaining card and its greatest gamble. Used sparingly, the threat of disruption can deter adversaries and strengthen negotiations. Used continuously, it invites retaliation, economic adaptation and domestic exhaustion. Iran’s challenge is therefore not simply to control the Strait, but to know when not to weaponize it.