Richard Marles warns Strait of Hormuz closure threatens global fuel supply as Middle East tensions escalate

Australia’s Defence Minister has warned the renewed closure of the Strait of Hormuz could destabilise global fuel supply chains, describing the development as “extremely disappointing” as tensions escalate in the Middle East.

Speaking on ABC Insiders, Richard Marles said the strategic shipping route must remain open to ensure stability in global energy markets and reduce uncertainty facing economies reliant on imported fuel.

The Strait of Hormuz, one of the world’s most critical maritime choke points, handles roughly a fifth of global oil supply. Any disruption to shipping through the narrow passage has the potential to drive price volatility and create supply concerns for countries, including Australia.

Mr Marles said restoring the free flow of commercial vessels was essential to global economic stability.

“This is extremely disappointing,” he said.

“All we want is ultimately to see the Strait of Hormuz open. That’s what’s critically important here, and for the global fuel supply chain to be returned to normality.”

The minister stopped short of commenting directly on the United States’ response to Iran’s actions, but acknowledged the significance of the escalating situation and its implications for international trade routes.

Australia already has a defence capability positioned in the region, with an E-7 Wedgetail surveillance aircraft operating in the Gulf at the request of regional partners.

Mr Marles said the aircraft was focused on defensive operations supporting Gulf nations, particularly the United Arab Emirates, and was not deployed as part of any blockade activity.

“It is there for the defence of the Gulf countries,” he said.

“That is the job that it’s doing.”

While declining to speculate on potential future commitments, Mr Marles confirmed Australia was working closely with international partners as discussions continue on how to ensure maritime stability.

“We are working with the UK, with France… and that does include the United States in respect of what the future might hold,” he said.

The Defence Minister emphasised the long-term importance of Australia’s alliance with the United States, describing the relationship as fundamental to national security.

“This is a long-term strategic alliance in the national interests of our country,” he said.

The closure of the Strait of Hormuz has injected fresh uncertainty into global energy markets, with analysts warning that prolonged disruption could delay the flow of oil shipments and contribute to ongoing price volatility.

For Australia, an island nation heavily reliant on maritime trade routes, the stability of key sea lines of communication remains critical to economic security and fuel supply resilience.