Australia is facing political and diplomatic pressure after it emerged that three of its defence personnel were present aboard a United States submarine that sank an Iranian naval vessel in the Indian Ocean. New details indicate that the Royal Australian Navy officers were instructed to remain in their sleeping quarters while the American strike was carried out, distancing them from direct operational involvement during the attack.
The incident occurred when the US Navy’s attack submarine USS Charlotte launched torpedoes at the Iranian warship IRIS Dena on March 4 near the Sri Lankan coast. The vessel had been returning from multinational naval exercises conducted by the Indian Navy when it was struck. The attack resulted in the deaths of 87 Iranian sailors, while 32 personnel were rescued. Dozens remain unaccounted for. The location of the strike expanded the conflict zone beyond West Asia and brought it closer to India’s maritime neighbourhood.
Australian Prime Minister Anthony Albanese acknowledged that the three Australian personnel were aboard the submarine as part of the AUKUS training programme involving Australia, the United States and the United Kingdom. The pact focuses on Indo-Pacific security cooperation and includes the transfer of nuclear-powered submarine technology to Australia. Albanese maintained that the Australians did not participate in combat actions and were not involved in the strike decision.
Subsequent reporting indicated that the personnel were directed away from operational areas of the submarine shortly before the attack commenced. However, it remains unclear whether they had prior knowledge of the mission or any opportunity to raise objections. The lack of clarity has fuelled domestic political debate in Australia, particularly given the country’s previously strained diplomatic ties with Iran.
Opposition voices have criticised the government’s position, arguing that Australia’s association with the submarine mission could imply indirect involvement in the conflict. Members of the Greens party questioned the transparency of official statements and expressed concern over international legal implications tied to participation in overseas military operations.
Questions have also arisen regarding the status of the Iranian vessel at the time of the strike. Iranian officials stated that the ship had been participating in ceremonial international exercises and was not carrying weapons. US defence authorities rejected that claim, asserting the vessel was a legitimate military target. The disagreement has intensified diplomatic friction as narratives from both sides continue to diverge.
