By Olumide Johnson
Brent crude has risen above $100 a barrel for the first time since late July as escalating US-Iran hostilities and attacks on commercial shipping and energy infrastructure across the Gulf and Red Sea raise fresh concerns about the security of global oil supplies.
The latest escalation has brought the Strait of Hormuz, through which a significant share of global oil and liquefied natural gas (LNG) shipments normally pass, back to the centre of the energy market.
Brent crude reached $100.70 a barrel on Wednesday afternoon, up 2.83 percent from Tuesday, as attacks on tankers and oil facilities intensified across the region.
DEVELOPMENT:
The latest escalation followed overnight US strikes on Iranian oil tankers after Iran targeted US military assets in the region.
US Central Command (Centcom) said that its forces destroyed five Iranian oil tankers, four in the Gulf of Oman and another near Kharg Island, Iran’s principal oil-export terminal.
Centcom said that the vessels, identified as Kaviz, Charminar, Horizon 1, Riesco and Derya, were struck after their crews were directed to abandon ship.
The Iranian Revolutionary Guards Corps (IRGC), meanwhile, said that it had attacked US military facilities in Jordan and subsequently claimed attacks on two US Navy destroyers and eight oil tankers in the Strait of Hormuz. Centcom rejected the claim that its warships had been struck.
The escalation has extended beyond US-Iranian military exchanges.
Iran’s IRGC said that it planned to establish a new ‘prohibited zone’ extending from the Strait of Hormuz into parts of the Sea of Oman and Arabian Sea.
“If a vessel enters that area without co-ordination, it will be subject to our sanctions,” IRGC spokesman Hossein Mohebi said.
The UK Maritime Trade Operations agency also reported that merchant vessels in the northern Gulf and Gulf of Oman had been affected by ongoing military activity.
Iraq separately reported that a Panama-flagged tanker, New Andros, carrying two million barrels of fuel oil, was hit by a drone and caught fire.
The Saudi-Houthi conflict has added another layer of risk. Houthi attacks on Saudi economic and energy targets reportedly caused fires at oil facilities and temporarily disrupted operations.
US Secretary of State Marco Rubio said the US response to attacks on its naval assets would continue to target Iranian oil shipping.
“Iran continues to try to hit US naval ships. And, for every time they do that or try to do that, they’re going to lose tankers. And I think you’ll see that again today,” Rubio told reporters during a trip to Colombia.
NUMBERS:
Brent crude reached $100.70 a barrel, representing a 2.83 percent daily increase and its highest level since late July.
That is a sharp reversal from the roughly $70 a barrel level before the US and Israel’s war with Iran began in February.
The most consequential supply number is the estimated 20 percent of global oil and LNG shipments that normally pass through the Strait of Hormuz.
The New Andros was reportedly carrying two million barrels of fuel oil when it was hit by a drone, illustrating the physical scale of cargoes now exposed to regional security risks.
The conflict is also generating significant human and economic disruption. More than 500 people have reportedly been killed and almost 20,000 displaced in fighting linked to the wider Yemen conflict.
The immediate oil-price reaction is therefore not simply a geopolitical premium. It reflects the market reassessing the physical security of energy supply routes and infrastructure.
SIGNIFICANCE:
The $100 threshold matters because oil prices transmit quickly into inflation, transport costs, refining economics, fiscal balances and consumer prices.
For oil producers, higher crude prices can improve government revenues and upstream economics. For oil-importing economies, the same price movement can increase foreign-exchange requirements, fuel costs and inflationary pressure.
The more important concern is duration.
If the conflict remains contained, the current price spike could represent a temporary geopolitical premium. If tanker attacks, port restrictions or disruption around the Strait of Hormuz persist, the market could begin pricing an actual supply shortage rather than merely higher risk.
The shipping dimension is particularly important. Oil markets depend not only on production but also on the ability to move crude and refined products from producing regions to consuming markets.
Damage to tankers, restrictions on maritime movement or threats to vessels can therefore affect prices even before physical production falls materially.
NEXT MOVE:
The immediate watchpoint is the Strait of Hormuz.
The market will be looking for evidence of whether commercial shipping can continue operating through the waterway, whether Iran implements its threatened “prohibited zone” and whether attacks on tankers become more frequent.
The second watchpoint is Saudi and broader Gulf energy infrastructure. Any sustained disruption to production, storage, export terminals or processing facilities would materially alter the supply outlook.
Oil traders will also watch the response of major producers, refiners, shipping companies and insurers as the cost and availability of maritime energy transportation change.
For Nigeria, the next question is how a prolonged period of elevated crude prices feeds through to government revenues, foreign exchange, domestic fuel pricing and the economics of local refining.
OUR LENS:
The deeper signal is that the global oil market is once again demonstrating that physical security of energy infrastructure can matter as much as production capacity.
The world may have sufficient oil underground, but that supply has limited economic value if tankers cannot safely transport it, export terminals are attacked or strategic waterways become inaccessible.
That makes the Strait of Hormuz more than a geopolitical flashpoint. It is a critical piece of global energy infrastructure whose disruption can transmit immediately into crude prices, freight costs, insurance premiums and inflation expectations.
The move above $100 therefore represents more than a psychological price milestone. It is a market warning about the cost of converting available hydrocarbons into reliably delivered energy.
The key question now is whether $100 oil becomes a temporary risk premium or the beginning of a sustained supply-disruption cycle. The answer will depend less on today’s headline price than on whether shipping routes, export infrastructure and regional production remain operational over the weeks ahead.
Olumide Johnson is a journalist, reporting on energy, business, markets, policy and developments shaping Nigeria’s economy.
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