
Iran's Threats Close Strait of Hormuz, Triggering Oil Surge Above $100 Per Barrel
Key Takeaways
- Strait of Hormuz closed due to threats from Iran, prompting regional production cuts.
- Oil prices surged, with reports citing levels near $102 and above $115.
- Historic supply disruption caused by regional production cuts and energy infrastructure damage.
Oil surge and supply risks
Oil prices spiked above $100 per barrel after threats and attacks tied to Iran and the wider US‑Israel‑Iran conflict disrupted flows through the Strait of Hormuz, producing one of the largest weekly gains in crude in decades.
“Oil prices surged Monday as Middle East countries cut production because the Strait of Hormuz remains closed due to threats from Iran, with no sign that the crucial chokepoint will reopen anytime soon”
CNBC reported that U.S. crude jumped about 35% last week — the largest weekly gain in futures trading since at least 1983 — and briefly topped $100 a barrel after markets opened Sunday evening.

The Voice of Africa noted that oil prices surged above $100 per barrel after the US‑Israel‑Iran conflict disrupted energy supplies, with Brent crude briefly hitting $119 and then settling near $110 amid attacks on infrastructure and shipping disruptions in the Strait of Hormuz, which carries about 20% of global oil trade.
La Dépêche described related attacks and interceptions that have raised supply risks, saying Saudi Arabia intercepted several drones on Monday that were heading for the Shaybah oil field in the country’s southeast and that the field had already been attacked the previous day.
Strait of Hormuz disruption
Market participants pointed to an effective closure of the Strait of Hormuz as a key driver: tankers are avoiding the narrow waterway amid fears of Iranian attacks, creating acute supply disruption.
CNBC said "The surge follows a de facto closure of the Strait of Hormuz: tankers are avoiding the narrow waterway amid fears of Iranian attacks, creating what consulting firm Rapidan Energy calls the largest oil supply disruption in history."

CNBC said "Roughly 20% of global oil flows through the strait."
The Voice of Africa similarly described "shipping disruptions in the Strait of Hormuz (which carries ~20% of global oil trade)."
La Dépêche linked the violence to broader regional strikes and strikes on storage that "further increase supply risks, according to Mr. Chan."
Gulf oil production cuts
Producers across the Gulf are cutting or managing output as storage fills and fields suffer steep declines, intensifying the supply shock.
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CNBC reported that Kuwait announced precautionary production and refinery cuts but did not give quantities.
CNBC said the UAE is 'carefully managing' offshore output while onshore operations continue.
CNBC said Iraq's three main southern fields have seen production fall about 70% to 1.3 million barrels per day from 4.3 million bpd before the Iran war.
La Dépêche added that the UAE, Kuwait and Iraq have cut output and that Iraq announced a drop of about 3 million barrels per day.
The Voice of Africa noted that Brent briefly hit $119 before settling near $110.
Market reaction to oil
Financial markets and policy watchers reacted fast: Asian stocks fell, European and U.S. futures declined, and analysts warned of inflationary and growth consequences if prices stay elevated.
The Voice of Africa summarized market moves: "Asian stocks fell and European and U.S. futures declined as investors priced in higher energy costs; the IMF warns a sustained 10% oil price rise would add roughly 0.4 percentage points to global inflation and shave ~0.15 points off growth — recent moves of more than 30% could have larger effects."

La Dépêche noted Moody’s caution that a sustained rise "would raise consumer prices and production costs, erode household purchasing power and weigh on investment globally," while CNBC underlined the extraordinary market shock with the "largest weekly gain in futures trading since at least 1983."
Oil shock: market responses
Governments and markets are already considering policy responses and longer‑term shifts in investment as imports and exports react differently to higher prices.
“War in Iran: historic surge in oil, barrel price rockets past $115, a "small price to pay" for Trump The price of a barrel of oil spiked 30% in a few hours on Monday and topped $115, a historic surge in a market panicked by the expansion of the conflict in the Middle East, the blockade of the Strait of Hormuz and damage to energy infrastructure”
La Dépêche reported "Early signs of strain include China asking refiners to suspend diesel and gasoline exports and reports that Japan is considering tapping strategic reserves."

La Dépêche also reported that "The U.S. may expand a temporary easing of sanctions on Russian oil to help relieve the market after initially authorizing purchases by India."
The Voice of Africa said the shock could "shift investor interest to African projects in Namibia, Senegal and Mozambique; Africa supplies about 7–8% of global oil," and noted how exporters and importers will be differently affected.
CNBC reported that "President Trump posted on Truth Social that higher 'short term oil prices' were a 'very small price to pay' for destroying Iran's nuclear threat," underscoring how geopolitical rhetoric is shaping market perceptions.