No single issue in the US-Iran war is more central, more contested, or more consequential than control of the Strait of Hormuz. Iran’s insistence on retaining sovereignty over the waterway is the most prominent element of its five-point ceasefire counter-proposal and the most direct conflict with the United States’ core war objective. How this issue is ultimately resolved — or whether it can be resolved at all within the current framework — will likely determine whether peace is achievable.
The Strait of Hormuz is narrow — barely 33 kilometres wide at its tightest point — but it carries approximately 20% of the world’s oil supply. Iran’s effective blockade of the waterway since the conflict began has been the single most economically damaging element of the war, sending oil prices to crisis levels and affecting consumers and businesses worldwide. The US entered the conflict with reopening the Strait as a declared objective, making it impossible to accept any settlement that left Iranian control intact.
Iran, for its part, views the Strait as a fundamental strategic asset. Control over the waterway provides Iran with enormous leverage in any future confrontation with the US or its Gulf allies. Surrendering that control — even through a negotiated formula that preserved nominal sovereignty — would leave Tehran significantly weaker in any future standoff. Iranian officials were therefore holding the Hormuz condition as a non-negotiable red line, even knowing it was unacceptable to Washington.
The economic and political pressure generated by the Hormuz blockade was simultaneously Iran’s greatest source of leverage and its greatest vulnerability. The blockade was hurting not just the US and its allies but Iran’s own economy and its relationships with countries like China and India that depended on Gulf oil. Every week the blockade continued imposed costs on Iran as well as on its adversaries, creating an economic incentive for resolution even if the political dynamics argued for holding firm.
Creative diplomatic formulations might eventually offer a way through. A formula that preserved Iranian nominal sovereignty while guaranteeing freedom of navigation, enforced through an international mechanism, could allow both sides to claim something. But creating and sustaining such a mechanism would require a level of trust that the current conflict had severely eroded. The Hormuz question was, in the end, a test of whether genuine compromise was possible between two parties who had been trying to destroy each other for months.