A plain-English guide to shipping chokepoints and oil supply risk.
Roughly 60 percent of world oil moves by sea, funneled through five narrow passages. Hormuz (20 mbpd, no full commercial bypass), Bab-el-Mandeb / Red Sea (6-7 mbpd oil plus most Asia-Europe container flow), Suez, Malacca (25 mbpd), Turkish Straits. This piece sets out what each carries, the historical premium a threat produces, the market signals (Brent-WTI spread, options skew, tanker rates), and why the Iran-retaliation story reaches oil specifically through Hormuz and the Red Sea rather than through Iran’s own barrels.
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