What happened on Friday
Brent crude touched $110 a barrel on Friday, its first time at that level since May, as traders priced in the risk that conflict in the Middle East could further tighten global supplies. Brent futures settled $3.94 higher β a 3.7 per cent jump β at $109.86 a barrel, the highest close since 19 May. US West Texas Intermediate crude rose $3.44, or 3.5 per cent, to close at $101.41, crossing $100 for the first time since 17 September. Over the week, Brent gained 4.9 per cent and WTI surged 10.4 per cent, its strongest weekly showing since July.
The rally rippled through financial markets. US stocks fell, with the S&P 500 down more than 1 per cent and the Nasdaq Composite sliding 2 per cent by mid-afternoon, while energy shares surged: the S&P 500's top five performers on the day were all energy names, and the sector ETF XLE rose 4.8 per cent on the week.
It is the latest leg of a rally that began this spring, when US and Israeli strikes on Iran in late February prompted the closure of the Strait of Hormuz. A fragile agreement briefly reopened the waterway, but the truce has been fraying for weeks β and on Friday it snapped audibly.
What drove the spike: two wars, one market
The spark was the Middle East. Iran-backed Houthi rebels have continued pounding Saudi Arabia with missile and drone strikes, and rumours of attacks on Saudi energy infrastructure resurfaced on Friday, sending prices off their earlier lows. Energy consultancy Energy Aspects said unverified Israeli reports suggested Iran might be preparing a pre-emptive strike after unusual military movements detected by Western intelligence β developments that, it said, reinforced its view that persistent escalation risks would keep prices supported.
A Saudi-led coalition said it intercepted and destroyed a ballistic missile aimed at the Red Sea port of Yanbu β a facility built precisely so the kingdom can bypass the Strait of Hormuz and keep oil flowing to international markets. Consultants Rapidan Energy Group said initial reports showed no damage to Yanbu's infrastructure, but the message to the market was clear enough: even the backup routes are in the line of fire.
The second front is the Strait of Hormuz itself, the narrow waterway through which roughly a fifth of the world's seaborne oil passes. Attacks around the strait have surged over the past ten days, with Iran saying it is stepping up strikes in response to a US blockade of its ports and tougher sanctions imposed last month. Two cargo ships sank near the strait after attacks this week, vessel strikes in the waterway have hit a record high this month, and Kpler analysts reported that intensified Iranian attacks drove Gulf crude flows sharply lower β with only a slower, more uneven recovery in Hormuz flows expected without a comprehensive political deal.
Meanwhile the war in Ukraine added a second supply shock. Ukraine struck Russia's Ryazan refinery on Thursday, knocking out a primary crude distillation unit, after President Zelenskyy declared his country was abandoning a week-old ceasefire covering energy sites announced by President Trump. Russia is traditionally one of the world's largest diesel exporters, and Ukrainian attacks on its refining capacity have taken much of it offline β forcing buyers to scramble for alternative supplies in a market with little spare capacity to offer.
Which supply routes are at risk
The Strait of Hormuz remains the single point of failure in global energy. Around a fifth of global oil shipments transit the waterway; cargo volumes had been recovering toward pre-war levels, topping 100 million barrels of crude last week, but the latest attacks threaten that fragile rebound. Every vessel strike raises freight and insurance costs, and those costs feed directly into the price of every barrel that gets through.
The Red Sea corridor is the backup under pressure. Yanbu and the shipping lanes through the Bab el-Mandeb strait are Saudi Arabia's and much of the region's alternative export route β which is precisely why a missile aimed at Yanbu rattled traders. Initial reports indicated no damage, but the interception was a reminder that the workaround is not immune to the conflict.
Then there is the diesel market, the often-overlooked engine of the global economy. Diesel powers farming, freight and heavy industry, and its price has been rising even faster than petrol in recent months. Russian refinery outages, combined with Russian strikes on Ukrainian energy assets, have squeezed a market where buyers forced to look elsewhere find, in the words of one analyst, no clear opportunities to easily expand diesel production. US distillate inventories β which include diesel and heating oil β sit at 102.6 million barrels, down 12 per cent year on year, according to the Energy Information Administration.
What it means for consumers and inflation
Higher crude prices eventually reach the pump. US regular petrol averaged $4.32 a gallon on Friday morning β before the day's rally β and analysts expect the latest jump to add further pressure in the coming days. Diesel futures rose more than 1 per cent on Friday, bad news for hauliers, farmers and anyone buying transported goods.
The inflation implications stretch well beyond fuel. Energy costs feed into food prices, air fares, manufacturing and logistics, and central banks watching for signs of persistent inflation will read $110 oil as a risk rather than a blip. The US Department of Energy's decision on Friday to request an exchange of up to 17 million barrels from the Strategic Petroleum Reserve β on top of an earlier agreement to loan 172 million barrels as part of a wider 400-million-barrel release coordinated with International Energy Agency members β shows how seriously Washington is taking the threat to prices.





