The 20 million barrels of oil flowing daily through the Strait of Hormuz represent 20% of global supply. A blockade constitutes a disruption four times larger than the Iranian Revolution or Yom Kippur War embargoes, with no simple replacement.

The war in Iran is choking the Strait of Hormuz, which handles 20% of global oil. This disruption impacts nearly three times more oil volume than Russia's exports at the start of the Ukraine war, posing a significantly larger threat to the global economy and inflation.

The current energy disruption involves a loss of 12 million barrels of oil per day, exceeding the combined total of the 1973 and 1979 crises. Additionally, natural gas losses are greater than during the Russia-Ukraine crisis, making this the largest energy security threat in history.

Despite government actions like tapping strategic reserves and using alternate pipelines, these measures can only offset about 9 million barrels per day of the 20 million lost from the Strait of Hormuz. This leaves a massive 11 million barrel per day shortfall, dwarfing previous supply shocks.

The ongoing conflict has taken 10% of global oil production offline, a supply disruption of a magnitude unseen by economists in at least 20 years. This is a pure supply-side shock, distinct from demand-side shocks like COVID, creating unique and severe inflationary pressures for the global economy.

The market impact from the expected, but unrealized, loss of 3 million barrels/day from Russia was immense. The current Strait of Hormuz disruption is four to five times larger at 14 million barrels/day. This scale of shortage is historically unprecedented, meaning past events are poor guides for predicting market outcomes.

Major historical oil price movements were triggered by supply-demand imbalances of just 2-3 million barrels per day. A disruption at the Strait of Hormuz would impact 20 million barrels daily, a scale that dwarfs previous crises and renders standard analytical models inadequate.

Drawing parallels to the 1970s oil shocks which spurred nuclear power and fuel efficiency, the IEA head predicts the current crisis will not only boost renewables but also drive a strong comeback for nuclear and, counterintuitively, a resurgence of coal in Asia due to high gas prices.

While media focuses on Europe and Japan, the IEA head highlights that the biggest victims of the energy crisis are developing countries. Lacking hard currency to compete for expensive oil and gas, they face severe economic strain, potential energy rationing, and a repeat of the 1970s foreign debt spirals.