Key Developments
On 16 August 2026, the Minister for Defence said Richard Marles would visit Papua New Guinea and Solomon Islands to strengthen defence cooperation, while the Minister for Defence said Australia and Papua New Guinea had advanced the Pukpuk Treaty as a new defence alliance.
Key Statistics
- 2 countries, Papua New Guinea and Solomon Islands, were included in the Defence Minister's trip, according to the Minister for Defence.
- 1 joint infrastructure project in Solomon Islands was listed for opening, according to the Minister for Defence.
- More than 70 years had passed since Australia last entered a new alliance of this type, according to the Minister for Defence.
- Historical comparison, more than $1 billion in infrastructure and health investment was linked to Australia's Fiji treaty agenda, according to the Minister for Foreign Affairs.
- Historical comparison, $181 million in security investment was linked to Australia's Fiji partnership, according to the Minister for Foreign Affairs.
Main Body
On 16 August 2026, the Minister for Defence said Deputy Prime Minister and Defence Minister Richard Marles would travel to Papua New Guinea and Solomon Islands to strengthen defence cooperation. The same day, the Minister for Defence said Australia and Papua New Guinea had advanced the Pukpuk Treaty, describing it as Papua New Guinea's first alliance and Australia's first such alliance in more than 70 years.
The Minister for Defence said Marles would meet leaders in both Pacific countries and open a joint infrastructure project in Solomon Islands. The Minister for Defence said the Pukpuk Treaty included deeper defence cooperation and a recruitment pathway for Papua New Guinean citizens to join the Australian Defence Force, with a pilot program planned for 2027.
The announcement followed a wider Australian push for Pacific security agreements, as GPS previously reported. On 11 August 2026, the Minister for Foreign Affairs tabled the Ocean of Peace Alliance and the Australia-Fiji Vuvale Union, linking them to military interoperability, transnational crime cooperation, infrastructure and health investment. On 7 August 2026, the Minister for Foreign Affairs also discussed a Solomon Islands-led regional security treaty and rebuilding trust with Pacific partners.
The practical significance was regional security coordination. The Minister for Defence framed the Pukpuk Treaty as a step toward stability and prosperity, while the Minister for Defence linked the trip to closer collaboration with Papua New Guinea and Solomon Islands. Together, the announcements placed defence ties, personnel pathways and shared infrastructure at the centre of Australia's Pacific diplomacy.
