Oil price volatility surges as Iran-US tensions over Strait of Hormuz escalate

Tensions between the United States and Iran have significantly disrupted global energy markets, leading to volatile oil prices as the critical Strait of Hormuz remains closed. Since August 11, 2026, oil prices have fluctuated, with Brent crude briefly hitting $90 per barrel and WTI rising past $84, driven by market fears that the blockade will be extended. US President Donald Trump has demanded that Iran pay compensation for lives lost during the conflict, while Iranian officials, including the new Secretary of the Supreme National Security Council, Mohsen Rezaei, insist the strait will remain closed unless the US ends its military actions and releases frozen assets.

The standoff has deepened following President Trump’s assertion that he intends to declare the strait US territory, a claim Tehran dismissed as political posturing, reiterating that the waterway remains under Iranian control. The International Energy Agency has since revised its 2026 global oil demand forecast downward by 1.6 million barrels per day, citing the blockade and surging fuel costs. The impasse shows no signs of immediate resolution, as Iran continues to link the reopening of the route to specific political and economic concessions from Washington, further complicating the outlook for global energy security.