US-Iran deal: Key questions remain over status of Strait of Hormuz

The tentative US-Iran deal to reopen the Strait of Hormuz marks a rare moment of détente between two longtime adversaries, but the agreement’s durability hinges on a question that has bedeviled negotiators for decades: who controls the waters through which one-fifth of the world’s oil passes? The strait, a 21-mile-wide chokepoint between Iran and Oman, has been a flashpoint for tensions since the 1980s, when Iran mined the channel amid its war with Iraq and threatened to block tanker traffic. Washington and Tehran have since engaged in a low-intensity shadow war, with seizures of ships, cyberattacks, and proxy conflicts stretching from Yemen to Syria. A deal that stabilizes the strait would ease global energy markets—where even rumors of disruption send prices soaring—but it also risks empowering Iran at a time when its regional influence remains a core grievance for US allies like Israel and Saudi Arabia. For the deal to hold, both sides will need to clarify what “reopening” the strait entails. The MOU’s language suggests a mutual understanding to avoid provocations, but past incidents—like the 2019 drone strikes on Saudi oil facilities or the 2021 seizure of a South Korean tanker—show how quickly maritime tensions can escalate. Iran’s Revolutionary Guard has historically used the strait as leverage, while the US Fifth Fleet’s presence is a constant reminder of Washington’s commitment to free navigation. The deal’s success may depend on whether Iran perceives lifting US sanctions as sufficient compensation for scaling back its naval provocations, or if it views the strait as a bargaining chip to extract further concessions. The broader implications are equally fraught. A stabilized Strait of Hormuz could accelerate the return of Iranian oil to global markets, potentially undercutting OPEC+ efforts to control prices. It might also embolden Iran to press its advantage elsewhere, from its uranium enrichment program to its support for militias in Iraq and Lebanon. Meanwhile, US allies in the Gulf, already skeptical of American reliability, could interpret any perceived leniency toward Iran as a retreat from regional security guarantees. The coming weeks will reveal whether this deal is a fleeting truce or the first step toward a more durable, if uneasy, coexistence. For now, the world watches the waters—and the negotiators—with cautious optimism.