Factbox-Biggest global oil supply disruptions in history

Core Insights - The closure of the Strait of Hormuz has caused the largest disruption to global oil markets in history, with a projected supply drop of approximately 8 million barrels per day in March, equating to around 8% of global supply [1] Group 1: Current Disruption - The International Energy Agency (IEA) reports that member countries will release a record 400 million barrels from strategic stockpiles to stabilize oil prices and offset the loss of Middle Eastern output [1] Group 2: Historical Context - The 1973–1974 Arab oil embargo led to a 5% production cut by Arab producers, escalating to additional monthly reductions, aimed at pressuring Western nations regarding Israel [2] - U.S. National Security Council documents indicated that the embargo would result in a shortfall of 2–3 million barrels per day for the U.S., with a total shortage of around 4.5 million barrels per day across embargoed nations [3] - Crude oil prices surged from about $2.90 per barrel before the embargo to $11.65 by January 1974, prompting the U.S. government to implement fuel rationing and push for alternative energy sources [4] Group 3: Impact of Historical Events - The Iranian Revolution in 1978-1979 caused a sharp decline in Iranian oil production by 4.8 million barrels per day, representing about 7% of global supply, leading to a rapid increase in oil prices [5] - The oil crisis contributed to rising inflation in the U.S., resulting in aggressive monetary tightening by the Federal Reserve, which ultimately led to a severe recession [6]