India and Australia have intensified their maritime cooperation, sending a clear signal to China in the Indo-Pacific region. On June 1, 2026, Defence Minister Rajnath Singh and Australian Deputy Prime Minister Richard Marles held the second India-Australia Defence Ministers' Dialogue in New Delhi. The two sides agreed to expand maritime domain awareness using patrol aircraft and explore deeper undersea surveillance capabilities.
Joint Maritime Security Collaboration Roadmap
As part of the agreement, India and Australia are building a Joint Maritime Security Collaboration Roadmap. This roadmap includes sharing intelligence and coordinating operations between their coast guards. The move aims to enhance security in the Indian Ocean region, where Chinese submarine activity has been increasing.
Quad's Indo-Pacific Maritime Surveillance Initiative
The defence dialogue came days after the Quad foreign ministers' summit in Delhi, attended by India, Australia, Japan, and the United States. The summit launched a new Indo-Pacific Maritime Surveillance Collaboration initiative. This initiative is designed to strengthen collective maritime domain awareness and counter aggressive naval maneuvers in the South China Sea.
China's Reaction
China responded swiftly to the developments. Foreign Ministry spokesperson Mao Ning accused the Quad of forming exclusive cliques and promoting bloc confrontation. However, Quad nations remain undeterred. As Chinese submarines expand their footprint in the Indian Ocean and aggressive actions increase in the South China Sea, the Quad is building up its capabilities.
The latest agreements between India and Australia underscore a shared commitment to a free and open Indo-Pacific. By enhancing surveillance and coordination, the two nations aim to ensure stability and security in the region.
