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“We are facing the biggest energy security threat in history,” Fatih Birol, the head of the International Energy Agency (IEA), told CNBC Thursday.

“As of today, we’ve lost 13 million barrels per day of oil ... and there are major disruptions in vital commodities,” he told Steve Sedgwick virtually at CNBC’s CONVERGE LIVE in Singapore.

Birol has previously warned that the Iran war and ongoing closure of the Strait of Hormuz would result in “the largest energy crisis we have ever faced.”

The vital maritime passage — through which an average 20 million barrels of oil and petroleum products were shipped every day before the war — is currently under a “double-blockade” with neither Iran nor the U.S. allowing vessels to enter or exit the strait.