Australia and Indonesia Forge Deeper Security Partnership with Joint Military Exercises and Expanded Cooperation

Jakarta/Singapore – Australia and Indonesia are significantly strengthening their security ties, highlighted by plans to redevelop World War II-era defense facilities on Morotai Island into a joint training base. This initiative, announced on Thursday, March 12, 2026, by Australian Defence Minister Richard Marles in Jakarta, underscores a growing strategic alignment between the two nations amid regional geopolitical shifts.

Joint Training Base on Morotai Island

The island of Morotai, located in North Maluku province, Indonesia, holds historical significance as a key Allied base during World War II, used in the liberation of the Philippines. The redevelopment of these facilities will provide a crucial location for joint military training exercises. Indonesia’s Defence Minister, Sjafrie Sjamsoeddin, indicated the facilities would likewise be open to Singapore and the Philippines, particularly relevant given the Philippines’ ongoing tensions with China in the South China Sea. Source: Sydney Morning Herald

Expanding Security Cooperation

Beyond the Morotai base, Australia and Indonesia are broadening their security collaboration to include Japan and Papua Latest Guinea. This expansion follows the signing of a Treaty on Common Security between Indonesian President Prabowo Subianto and Australian Prime Minister Anthony Albanese in February. Source: Al Jazeera

Personnel Exchange and Bilateral Integration

A key component of the enhanced partnership involves the embedding of an Indonesian colonel as a deputy commander of Australia’s 1st Brigade in Darwin, starting in early 2027. The 1st Brigade has a strong history of interaction with the annual rotation of US Marines. Source: Sydney Morning Herald

Morotai as a Regional Hub

Indonesia initially offered the Morotai training facility to Singapore, but the offer was declined due to the distance. However, a separate training facility with Singapore will proceed in North Kalimantan. Defense Minister Sjafrie Sjamsoeddin emphasized Indonesia’s openness to cooperation with neighboring defense agencies, highlighting the nation’s strategic location. Source: Tempo.co

Strategic Context and Regional Dynamics

These developments reflect Indonesia’s and Australia’s shared interest in maintaining regional stability amidst the rise of China and an evolving geopolitical landscape. While Indonesia maintains good relations with China, the security cooperation with Australia, Japan, and Papua New Guinea signals a desire to diversify partnerships and strengthen regional security architecture. Source: Sydney Morning Herald

Key Takeaways

• Australia and Indonesia are redeveloping WWII-era facilities on Morotai Island into a joint training base.
• The partnership extends to include security cooperation with Japan and Papua New Guinea.
• An Indonesian colonel will be embedded within the Australian 1st Brigade in Darwin.
• The initiatives aim to bolster regional security, and stability.