Woody Magazine 🧠 Did You Know — "The 39-Kilometer Chokepoint: Why the Strait of Hormuz Holds the World Hostage"
One-Fifth of the World's Oil
Flows Through a 39-Kilometer Gap
The Strait of Hormuz — a name meaning "light and wisdom," and the world's most dangerous bottleneck
(usable lane: ~10 km)
oil supply
crude oil imports
When the US and Iran announced a two-week ceasefire on April 8, international oil prices fell 14% in a single day. Stock markets across Asia surged. South Korea's KOSPI and KOSDAQ both triggered circuit breakers — on the upside. All of that happened because one narrow strip of water might reopen for business: the Strait of Hormuz.
The strait sits between Iran to the north and the Omani peninsula of Musandam to the south, connecting the Persian Gulf to the Gulf of Oman and, from there, to the rest of the world's oceans. At its narrowest point, it is about 39 kilometers wide. But shallow waters, islands, and reefs make the navigable channel for large tankers only about 10 kilometers across. Broad enough to look safe on a map. Too narrow to feel safe in practice.
Through that slim corridor passes between 20 and 30 percent of all seaborne oil — roughly one-fifth of the planet's daily supply. Add liquefied natural gas, and the figure climbs toward a third of global LNG trade. Every major oil producer in the Persian Gulf — Saudi Arabia, Iraq, the UAE, Kuwait, Qatar — depends on this single exit point. There is no practical alternative. Eighty percent of the oil that transits Hormuz flows eastward, toward Asia: South Korea, China, and Japan.
For South Korea, the exposure is stark. About 70% of the country's crude oil imports pass through the strait. In 2025, that amounted to roughly 95 million of the 137 million tons Korea imported — from Saudi Arabia, the UAE, Iraq, Kuwait, and Qatar combined. The government maintains strategic reserves covering approximately seven months of consumption. That sounds substantial. But a prolonged closure, as analysts at Oxford Economics warned during the recent conflict, would create supply shortfalls that reserves alone cannot bridge.
The geography creates a structural vulnerability that no diplomacy has ever fully resolved. Despite international shipping lanes being routed as far south as possible, roughly half of the navigable channel still passes through Iranian territorial waters. Tehran has, in effect, always held a key to the lock. For decades, Iranian officials have threatened closure as a deterrent — during the Iran-Iraq War, during Western sanctions, during every escalation with Israel or the United States. The threat has never been fully executed. This past month, it came closer than any time before.
There is a quiet irony in the name itself. "Hormuz" derives from Ahura Mazda — the supreme deity of Zoroastrianism, whose name translates from ancient Persian as "light and wisdom." The world's most contested energy chokepoint is named for enlightenment. Whether that counts as history's dark humor or its faint optimism is, perhaps, a matter of which side of the ceasefire you are on.
- Strait of Hormuz — Namu Wiki (Korean)
- Strait of Hormuz — Wikipedia (Korean)
- "Hormuz Strait" editorial — Kyunghyang Shinmun
- Hormuz blockade: America's non-problem — Energy Economy News (Mar. 1, 2026)
- China, Japan face energy crisis as Hormuz closes — Munhwa Ilbo (Mar. 2, 2026)
- 500 million years of geology behind Hormuz — Energy Economy News (Apr. 3, 2026)
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