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GeopoliticsHigh ImpactUpdated•Originally published 25 June 2026•Updated 27 June 2026•
1 min read

Iran tightens grip on Strait of Hormuz, sends oil prices higher

A clamp in Iranian flag colors squeezing a gate, topped with an oil barrel and a rising red arrow over a map of Iran.

Key Facts

1Iran appears to assert control over the Strait of Hormuz, raising oil supply disruption risks and pushing prices higher.

Amid rising geopolitical tensions in the Middle East, reports indicate that Iran is strengthening its grip on the Strait of Hormuz, a critical chokepoint for about 20% of global oil supply. According to MarketWatch, this development is stoking fears of supply disruptions and pushing oil prices higher.

Per market data, Brent crude futures rose to around $86.50 per barrel at the close on June 25, 2026, while West Texas Intermediate climbed to $82.10. This follows an average Brent price of roughly $78 in the first quarter, reflecting the current geopolitical risk premium. Analysts warn that any further escalation could push prices above $90.

Traders are closely watching the situation in the Strait of Hormuz, where any military action or new sanctions could worsen the crisis. Markets are also awaiting weekly U.S. inventory data from the Energy Information Administration for demand signals. Focus will remain on international responses, particularly from the United States and naval powers, to any Iranian moves threatening freedom of navigation.