Ormuz strait closure: a global depression looms?

The Strait of Hormuz, a mere 33 kilometers wide, is quietly holding the world economy hostage. While geopolitical tensions in the region are nothing new, Iran’s recent actions – mining the strait and threatening vessels – have transformed a simmering risk into a potential catastrophe. Experts warn that prolonged closure could trigger a global depression, a scenario far more severe than a mere recession.

The strait's vital role

Approximately 20% of the world’s daily oil and natural gas consumption flows through the Strait of Hormuz, originating from key producers like Saudi Arabia, the UAE, Kuwait, Iraq, and Iran itself. There’s simply no viable alternative route to compensate for such a disruption. This isn't a diplomatic spat or a logistical hiccup; it's a direct, forceful blockade.

Rory Johnston, speaking to the New Statesman, painted a stark picture: no insurance company will cover ships navigating these waters, and no shipowner will risk sending vessels without protection. The difference between a recession—a downturn from which economies typically recover within a year or two—and a depression is profound. A depression brings sustained collapse, mass job losses, the failure of entire supply chains, and structural damage that can take a decade to repair. This isn’t a crisis the market can readily absorb, unlike the shocks experienced in 2022 with the Russia-Ukraine war or more recently with Houthi attacks in the Red Sea.

A perfect storm

While those prior events caused energy market volatility, Europe was able to pivot to alternative sources and adjust consumption. The Strait of Hormuz offers no such breathing room. The sudden, massive volume cut, combined with a lack of immediate alternatives, is creating unprecedented tension, reflected in rapidly rising price projections. If a diplomatic resolution remains elusive, these projections risk becoming the new operational reality.

The economic fallout

For wealthier nations, a surge in oil prices acts as a massive, instantaneous tax hike on the entire economy, as Johnston puts it. Household and business funds previously allocated to fuel, transport, and energy are instead diverted, stifling consumption and investment, fueling inflation, and placing central banks in a precarious position—forced to balance inflation control with the risk of deepening a recession through interest rate hikes.

Europe, heavily reliant on imported natural gas, finds itself particularly vulnerable, as that market operates on a volatile, open-bid system. Southern Global nations lack the resources to compete in this auction, facing genuine scarcity rather than merely higher prices. The ripple effects will extend to food transportation, agricultural logistics, and humanitarian supply chains, already operating on razor-thin margins.

The world has weathered severe energy crises before, but never one that combines this volume of supply disruption with such speed. Johnston's analysis isn’t driven by alarmist rhetoric; instead, he highlights the inadequacy of current tools to avert disaster if the conflict persists. The sole variable capable of altering this economic calculation rests not with central banks or finance ministries, but squarely on the negotiating table.

The clock is ticking.