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As of September 17, 2025, Australia and Papua New Guinea (PNG) have signed a defence communique but postponed the formal signing of a landmark mutual defence treaty. The treaty, elevating their security ties to the level Australia holds with the US and New Zealand, awaits cabinet approvals in both countries. The pact integrates defence forces, allows military service across borders, and offers PNG nationals a pathway to Australian citizenship, amid efforts to counter China's growing Pacific influence.
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Japan's Defense Minister hosted Australian counterpart Marles aboard the JS Mikuma, as Australia announced the selection of Mitsubishi's Mogami-class frigates for its navy. The deal enhances bilateral cooperation, supply chain ties, and regional stability amid rising tensions in the Indo-Pacific.
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Australia will send a liaison officer to Israel as part of a US-led international stabilization force supporting the Gaza ceasefire. The force aims to facilitate humanitarian aid, monitor compliance, and support the peace process, amid ongoing violence and diplomatic negotiations involving multiple nations.