Oil prices rose on Monday after US President Donald Trump rejected an Iranian peace proposal, bringing the Strait of Hormuz back into focus for investors. The diplomatic deadlock highlights how disruption to one narrow shipping route can transmit higher costs across the world, affecting inflation, business investment and household spending.
Diplomacy leaves markets waiting
Brent crude futures reached $105.64 a barrel in early trading, while US West Texas Intermediate rose to $93.11, as markets assessed the prospects for an agreement.
Iran has offered to reopen the strait within seven days if Washington eases military pressure and lifts its blockade on Iranian ports. However, an offer conditional on political concessions provides little certainty for businesses planning fuel purchases and deliveries.
Until negotiations produce a workable settlement, energy prices remain exposed to sudden changes in diplomatic and military developments.
A regional passage with global consequences
Situated between Iran and Oman, Hormuz connects the Persian Gulf with the Gulf of Oman and shipping routes beyond.
Its economic influence reaches far beyond the oil industry. More expensive crude can raise diesel and aviation fuel costs, increasing the expense of transporting goods and people. Manufacturers face pressure on margins, while retailers must decide how much to pass on to customers.
For oil-importing economies, sustained increases can also weaken trade balances and put pressure on currencies. Central banks face a difficult balance: higher energy costs can lift inflation while reducing consumers’ spending power.
Recovering exports offer limited reassurance
Preliminary Kpler figures indicate that crude exports from key Middle Eastern producers recovered to approximately 12.8 million barrels per day in September, their highest level since the conflict began in February.
Shipments through Hormuz were expected to reach around 7.4 million barrels per day.
That recovery offers some reassurance about available supply. It does not guarantee that future shipments will arrive without interruption. Markets price both the barrels moving today and the risk of shortages tomorrow.
The economic stakes of an agreement
A credible settlement could reduce uncertainty for shipping companies, energy buyers and investors. Continued deadlock risks prolonging higher costs and delaying business decisions.
For households thousands of kilometres from the Gulf, the consequences arrive through fuel bills, transport charges and everyday purchases.
Every tanker passing through Hormuz carries energy. Its safe passage also matters to the world’s inflation outlook.
Newshub Editorial in Asia – 28 September 2026
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