Iran War Creates 'Biggest Energy Security Threat in History,' IEA Chief Says

Fatih Birol, who leads the International Energy Agency, told CNBC Thursday that the world faces its worst energy security threat ever. The crisis stems from the ongoing conflict between Iran and the United States and Israel.

The situation has already disrupted global energy supplies. No new energy shipments have been loaded in April, signaling a worsening crisis that could have major economic impacts worldwide.

Iran sits on some of the world's largest oil reserves and controls the Strait of Hormuz, a critical shipping route for global energy supplies. When conflicts disrupt this region, it affects oil and gas prices around the world.

The IEA is an international organization that tracks global energy markets and advises governments on energy policy. Birol's warning suggests the current crisis could be worse than previous oil shocks from past Middle East conflicts.