Indonesia, Australia to expand security cooperation with Japan, PNG
Indonesia and Australia are expanding their security cooperation to include Japan and Papua New Guinea (PNG). Indonesian Defence Minister Sjafrie Sjamsoeddin announced the planned trilateral arrangements following a meeting with his Australian counterpart Richard Marles on March 12, 2026.

Briefing Summary
AI-generatedIndonesia and Australia are expanding their security cooperation to include Japan and Papua New Guinea (PNG). Indonesian Defence Minister Sjafrie Sjamsoeddin announced the planned trilateral arrangements following a meeting with his Australian counterpart Richard Marles on March 12, 2026. This expansion builds upon a recent security treaty signed between Indonesia and Australia, which committed both nations to joint military training and increased information sharing. The potential development of a joint defense training facility on Morotai Island in Indonesia was also discussed. These moves aim to support a secure and peaceful Indo-Pacific region, leveraging existing defense pacts Australia has with both PNG and Japan.
Article analysis
Model · rule-basedKey claims
5 extractedThe meeting was an opportunity to discuss “our defence relationship as we work together to support a secure and peaceful Indo-Pacific region”.
Indonesia and Australia will also work together on intelligence sharing.
Indonesia and Australia are planning to expand their security cooperation to include Japan and Papua New Guinea (PNG).
Australian and Indonesian ministers discussed developing a defence training facility on Morotai island.
Trilateral security arrangements would be developed with Indonesia, Australia and Japan, as well as between Indonesia, Australia and Papua New Guinea.