Japan and Australia reject Strait of Hormuz security mission as calls grow for international support to protect shipping in the strategic waterway following escalating tensions involving Donald Trump and Iran.
The Strait of Hormuz, one of the world’s most critical oil transit routes, has been largely closed since the outbreak of the latest conflict in the Middle East.
The disruption has raised concerns about global energy supply and shipping safety as Iranian strikes and regional military activity threaten commercial vessels passing through the narrow channel.
Over the weekend, Trump urged several major economies to join what he described as a “team effort” to secure the waterway and ensure the safe movement of oil tankers and cargo ships.

The US president specifically called on countries including China, United Kingdom, Japan, France and South Korea to contribute naval forces to the operation.
However, Tokyo has made clear that it is not currently planning to deploy warships to the region. Japan’s defence minister Shinjiro Koizumi told parliament that the government is closely monitoring developments but has not decided to launch a maritime security mission in response to the crisis.
Koizumi said the situation involving Iran remains complex and that Japan is taking a cautious approach while assessing diplomatic and security implications. He added that the government will continue to review the situation before making any decisions about military deployments.
Australia has also declined to commit naval forces at this stage.
Transport minister Catherine King confirmed that Canberra recognises the importance of maintaining safe shipping routes but said Australia had neither been formally asked to participate nor was it currently contributing ships to the mission.
Speaking to Australia’s national broadcaster, King stressed that while the Strait of Hormuz is a vital artery for global trade and energy transport, the government was focused on monitoring the situation and coordinating with international partners rather than immediately deploying naval assets.
The Strait of Hormuz connects the Persian Gulf with the Gulf of Oman and the Arabian Sea, making it one of the most strategically important maritime passages in the world.
A significant portion of the planet’s oil exports moves through the narrow strait each day, meaning any disruption can quickly affect global energy markets and fuel prices.
The near closure of the waterway since the start of the conflict has heightened fears of a prolonged disruption that could ripple across international economies. Shipping companies and energy markets have been closely watching developments as insurers raise premiums and vessels seek alternative routes where possible.
Meanwhile, officials in the United Kingdom are reportedly considering alternative ways to assist with reopening the strait without sending traditional naval ships. British ministers are said to be drawing up plans to deploy minesweeping drones designed to clear potential naval mines and ensure safe passage for commercial vessels.
According to reports from Whitehall, the UK government is wary that sending large naval vessels could risk escalating the conflict further, particularly if tensions with Iran intensify.
Trump has continued to push allies to contribute more actively, warning that failure to support the security effort could have broader consequences for military alliances such as NATO.
He previously suggested the alliance could face a “very bad” future if member states did not increase their involvement in safeguarding international shipping routes.
Despite the pressure from Washington, several governments appear to be weighing the risks of deeper military involvement against the need to maintain stability in an already volatile region.
For now, Japan and Australia’s decisions highlight the cautious approach many countries are taking as the Strait of Hormuz crisis continues to evolve.
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With tensions between Iran and the United States showing little sign of easing, the question of who will ultimately lead efforts to secure the vital waterway remains unresolved.


