Iran War Triggers Historic Oil Shock

The ongoing conflict in Iran has resulted in the largest oil supply shock in history, with approximately 20 million barrels per day unable to reach global markets for over a week as of March 11, 2026. This disruption stems from the closure of the Strait of Hormuz, a critical chokepoint through which one-third of the world's seaborne oil exports and one-fifth of global natural gas shipments typically pass.

The closure, following military actions by the United States and Israel, has caused oil prices to surge, with daily fluctuations exceeding 20% in the past week.

Historically, the Strait of Hormuz closure was considered a remote risk due to Iran's economic reliance on its passage. However, the current conflict has actualized this scenario, leading to Gulf state producers throttling production as they lack export routes and storage capacity. This event surpasses the 1979 oil shock, which also involved Iran and caused oil prices to more than double, by a factor of at least two in terms of barrels removed from the market.

The prolonged nature of this energy crisis is anticipated, with experts suggesting that high energy prices will persist even if the war concludes swiftly. The disruption is expected to slow industrial activity globally and increase food costs, indicating a significant and lasting impact on the world economy.