Why Global Oil Markets Remained Stable Despite the Strait of Hormuz Crisis

Fourteen percent of global oil supply disappears from the market, and the price barely registers. That is the structural anomaly the European Central Bank dissects in a new analysis comparing the energy shock triggered by the Iran war with the one that followed Russia's invasion of Ukraine.

According to the ECB's blog post, the supply disruption triggered by the closure of the Strait of Hormuz in late February 2026 is roughly fourteen times larger than the one the world absorbed after February 2022. Yet futures markets have responded with what the Bank describes as "comparatively muted" price moves. The gap between realised shock and price reaction is not a market malfunction — it is a diagnostic of how the global energy architecture has changed.

Scale of the two disruptions

The numbers are stark. Military strikes involving the United States, Israel and Iran shuttered the Strait of Hormuz, interrupting transit of roughly 20 million barrels per day — one-fifth of global oil supply. Saudi and Emirati pipeline networks have partially rerouted flows, but the realised supply loss still averages around 14 mb/d, or 14% of global output.

By contrast, the Ukraine war removed only about 1 mb/d from global markets, roughly 1% of supply. Most of Russia's 10 mb/d of crude continued reaching buyers despite sanctions. For gas, the Ukraine episode exposed Europe to the loss of Russian pipeline flows; the Iran episode exposed it to disruptions in LNG volumes transiting Hormuz.

Why prices didn't follow the supply curve

The ECB points to three structural buffers. Global inventories entered the Iran episode at higher levels, giving refiners and traders a runway to draw down stocks before spot prices had to clear the market. Supply routes have diversified — pipeline capacity in the Gulf, redirected LNG flows, and a more elastic seaborne network absorbed part of the displacement. And competition for LNG cargoes reshaped the demand side: European buyers, still rebuilding storage after 2022, behaved differently this round than they did four years ago.

These buffers compress the pass-through from physical disruption to price. Futures curves have flattened rather than backwardated sharply, suggesting that consensus expectations priced the shock as transient rather than structural.

What to watch

The signal worth tracking is not the headline price but the inventory drawdown. If Gulf inventories and spare pipeline capacity continue absorbing the displacement, we will see futures stay anchored and the macroeconomic damage contained. If either buffer erodes — through a prolonged closure, a second front, or a demand surge heading into winter — the curve will steepen quickly, and the "muted" response will look less like resilience than like deferred risk.

For now, the architecture built after 2022 is doing exactly what it was designed to do. That is the most important macro fact in the energy market this quarter.