TEHRAN, July 7 — Iran’s long-standing threat to block the Strait of Hormuz is back in the headlines, following the collapse of nuclear talks in 2024 and 2025. For anyone who hasn’t been watching this geopolitical chess match closely, here’s what it means in plain terms: roughly one-fifth of the world’s oil passes through that narrow waterway. Think of it like a highway on-ramp for global energy supplies.
If Iran follows through, the ripple effects hit gas pumps and heating bills everywhere. The Strait of Hormuz isn’t a new flashpoint.
Iran first used the strait as a weapon during the Iran–Iraq War from 1980 to 1988, when it attacked oil tankers transiting the chokepoint. That playbook resurfaced in 2011 and 2012, when Tehran renewed threats to close the strait in response to U.S. and European Union sanctions over its nuclear program. Tensions cooled temporarily after the 2015 Joint Comprehensive Plan of Action, or JCPOA, which put limits on Iran’s nuclear work in exchange for sanctions relief.
The practical upshot for ordinary readers: for a few years, the threat of a strait closure faded from daily headlines. But the U.S. withdrawal from the deal in 2018 under President Donald Trump sent relations into a tailspin.
The current escalation follows a familiar pattern of retaliation. The 2019 attacks on Saudi Aramco facilities and the 2020 assassination of Iranian General Qasem Soleimani marked low points in an already hostile relationship. Now, with nuclear talks having failed in both 2024 and 2025, the strait is once again a pressure point.
What’s different this time? The source material doesn’t specify new military deployments or diplomatic maneuvers. But the pattern is clear: when Iran feels squeezed by international pressure, the Strait of Hormuz becomes its most visible bargaining chip.
The practical upshot for the global economy is uncertainty. Shipping insurers raise premiums.
Oil markets price in risk. And consumers eventually feel the pinch. For now, the situation remains tense but not yet at the boiling point of the 2019 attacks or the Soleimani strike.
The failed talks in 2024 and 2025 suggest neither side is eager to return to the negotiating table. What to watch next: whether Iran’s threats move from rhetoric to action, and how the Trump administration responds if tanker traffic starts getting disrupted.
