According to a report by the global financial institution, J.P. Morgan Private Bank, there have been nine crises in the Middle East during the period 1956-2026 that disrupted the world's oil supply.
The first recorded event to disrupt global oil supply was the Suez Crisis of 1956-1957, when the Egyptian government took control of the Suez Canal.
Based on data collected by J.P. Morgan Private Bank, this crisis is estimated to have disrupted 10% of the global oil supply.
However, among the nine crises that occurred in the Middle East, the most impactful on global oil supply was the US-Israel war against Iran.
The United States and Israel attacked Iran on February 28, 2026. As of the writing of this article, there is no concrete agreement to end the war, aside from a ceasefire.
This conflict, which J.P. Morgan Private Bank refers to as the Gulf War III, is estimated to have disrupted 20% of the global oil market.
J.P. Morgan Private Bank explained that before the war broke out, the volume of crude oil and refined products passing through the Strait of Hormuz-between Iran, Oman, and the United Arab Emirates-reached around 21 million barrels per day.
Of this amount, around 1.8 million barrels from Iran were still flowing and 4-5 million barrels had been diverted through the Red Sea and Fujairah terminals.
"If this is the case, it will be the largest disruption in terms of barrel volume and reserve capacity percentage since World War II," explained J.P. Morgan Private Bank in Pandora's Bog: the Global Energy Shock of 2026.
The following is an estimate of the percentage of global oil supply disruptions due to crises in the Middle East, sorted chronologically by the earliest event year:
- Suez Crisis (1956-1957): 10%
- Six-Day War (1967): 5%
- Arab Oil Embargo (1973): 7%
- Iranian Revolution (1978-1979): 5%
- Iran-Iraq War (1980-1988): 5%
- Gulf War I (1990-1991): 9%
- Gulf War II (2003-2011): 7%
- Abqaiq (2019): 5%
- Gulf War III (2026-present): 20%