Tehran’s’tollbooth’: How Iran picks who to let through Strait of Hormuz

Al Jazeera
March 26, 2026
3 min read

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The Bottom Line

Iran has blocked passage of vessels carrying 20 percent of global oil and LNG supplies.

How This Affects You

Higher gas prices and energy costs may result from Iran's blockade of one-fifth of the world's oil and liquefied natural gas supplies moving through the Strait of Hormuz.

AI Summary

Iran has blocked passage of vessels carrying 20 percent of the world's oil and liquefied natural gas supplies through the Strait of Hormuz, effectively controlling a critical chokepoint for global energy markets. The strait is one of the world's most strategically important waterways, and Iran's ability to restrict transit gives it outsized leverage over international oil and gas flows. By selectively allowing or denying passage, Iran can pressure adversaries, extract concessions, and influence global energy prices while demonstrating control over a waterway through which roughly one-fifth of globally traded oil passes daily. The blockade reflects mounting regional tensions and Iran's strategy of using its geographic position as a geopolitical weapon. The disruption threatens energy security for major trading partners and could drive up prices for consumers worldwide if extended.

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