Brent Crude tumbles below $80 as US, Iran sign accord to reopen Strait of Hormuz

17 Jun 2026

​Global energy and commodity markets experienced a massive relief rally on Tuesday following the signing of a landmark diplomatic agreement between the United States and Iran.

The surprise deal provides for the immediate reopening of the strategically vital Strait of Hormuz and the lifting of the U.S. maritime blockade on Iran, effectively defusing months of intense geopolitical gridlock in the Middle East.

​The deal was formally signed by U.S. President Donald Trump, Vice President JD Vance, and Iran’s parliamentary speaker, Mohammad Bagher Qalibaf.

​The market reaction was immediate as Brent crude futures plummeted below the $80-per-barrel threshold for the first time in more than four months, signaling that traders are rapidly pricing out the geopolitical risk premium that has gripped energy markets all year.

Wall Street banks moved instantly to adjust their long-term models, with both Goldman Sachs and Morgan Stanley slashing their fourth-quarter 2026 Brent price forecasts by $10 down to an average of $80 per barrel.

​Speaking on the sidelines of the G7 summit in France shortly after the announcement, President Trump clarified that the United States would not be injecting direct investments into Iran as part of the temporary peace agreement.

​However, the President stated that there could be huge opportunities for international business in Iran once the broader terms of the peace deal are fully solidified.