The U.S.-Israeli conflict with Iran has led to an unprecedented oil supply disruption, with losses exceeding 12 million barrels per day, according to the International Energy Agency (IEA). This situation is compounded by the ongoing European gas crisis stemming from Russia's invasion of Ukraine. The current conflict has resulted in a cumulative loss of approximately 624 million barrels over 52 days, highlighting new vulnerabilities in energy markets that have developed due to rising demand and deeper global trade connections. Unlike previous energy crises, such as the 1973 Arab oil embargo and the Iranian Revolution, this disruption affects not only crude oil but also natural gas and refined fuels, leading to shortages in jet fuel and diesel. The IEA has responded by releasing a record 400 million barrels from strategic reserves to stabilize prices. The scale of the current crisis is larger than past disruptions, yet the cumulative impact of earlier events remains significant, as seen in the Iranian Revolution which caused a loss of 4.27 billion barrels over three years. As the conflict continues, supply disruptions are expected to persist, potentially affecting global energy security for years to come.