India-Japan Defence Cooperation Breaks New Ground

UPSC Syllabus: Gs Paper 2- International Relations 

Introduction

India and Japan share a long-standing partnership based on shared democratic values, mutual respect and civilisational ties. The two countries will mark 75 years of diplomatic relations in 2027. Their defence cooperation has expanded through dialogues, the 2+2 mechanism, military exercises, logistics and technology discussions. The August 2026 Defence Ministers’ meeting marks a new phase, focused on operational capability, defence-industrial cooperation and stronger maritime coordination.

Evolution of Defence Cooperation

1. Institutionalising Defence Ties: Over the past decade, India and Japan have developed defence cooperation through annual dialogues, the 2+2 mechanism, military exercises, logistics arrangements and defence-technology discussions.
2. Expanding Military Exercises: Defence exercises have moved beyond basic engagement, with Dharma Guardian, JAIMEX and Veer Guardian providing increasing opportunities for interoperability among the armed forces.
3. Deepening Army Interoperability: The 2026 Dharma Guardian, involving more than 200 troops, strengthened joint capabilities through counter-terrorism, urban warfare and combat drills in complex terrain.
4. Moving into Advanced Air Cooperation: Veer Guardian 26 marks a new step as Japanese fighter aircraft are participating in the exercise in India for the first time, scheduled for September 9–22, 2026.
5. Building Naval Operational Experience: The 2025 JAIMEX included anti-submarine warfare, missile defence, flying operations and replenishment drills, followed by INS Sahyadri’s port call at Yokosuka.
6. Extending Cooperation to Third Countries: India and Japan conducted their first trilateral naval exercise with Indonesia in early 2026, showing a move towards wider regional maritime cooperation.

New Areas of Defence Cooperation

1. Formalising Maritime Security: India and Japan signed a Memorandum of Arrangement on Maritime Security Cooperation to strengthen coordination for the protection of maritime routes and Sea Lines of Communication.
2. Creating a Shared Maritime Picture: Both sides will deepen information sharing and Maritime Domain Awareness, linking Japan’s focus on the East China Sea and waters around Taiwan with India’s central role in the Indian Ocean.
3. Strengthening Naval Logistics: Cooperation will include mutual naval visits, use of ports, maintenance and repair facilities, personnel exchanges and Subject Matter Expert exchanges, making naval cooperation more practical.
4. Exploring Joint Shipbuilding: India and Japan will explore joint development in naval shipbuilding and design, combining Japanese technological expertise with India’s production capabilities.
5. Expanding Defence Production: Japan will deepen discussions on using Indian production capabilities under Make in India, while both sides will explore reciprocal arrangements for ship-repair facilities.
6. Implementing UNICORN: The proposed transfer of Japan’s UNICORN integrated communications antenna system represents a concrete step in defence-technology cooperation; its co-development with Bharat Electronics Limited was already covered by an MoU signed in November 2024.
7. Deepening DRDO–ATLA Cooperation: India’s DRDO and Japan’s Acquisition, Technology and Logistics Agency (ATLA) will deepen cooperation, supporting the implementation of defence-technology projects between the two countries.

Significance and Impact

1. Shifting from Dialogue to Delivery: The key change is the move from repeated declarations of strategic convergence towards projects, exercises and arrangements that improve actual operational capability.
2. Connecting the Indian Ocean and Pacific: India and Japan’s positions at opposite ends of the Indo-Pacific make information sharing important for developing a more continuous maritime picture across interconnected sea spaces.
3. Strengthening Defence-Industrial Cooperation: Joint shipbuilding, Indian production and reciprocal repair arrangements can address the long-standing gap between strong political-strategic ties and limited defence-industrial outcomes.
4. Improving Operational Preparedness: More complex exercises, unmanned systems, short-notice drills and cooperation between special operations forces will make bilateral military engagement more operationally focused.
5. Protecting Maritime Lifelines: Greater coordination on Sea Lines of Communication supports freedom of navigation, overflight and lawful commerce, which both countries view as increasingly vulnerable.
6. Building a Wider Security Architecture: Maritime security, defence industry, logistics, resilient supply chains and third-country cooperation are increasingly linking India-Japan defence ties with the broader Indo-Pacific security framework.

Way Forward

1. Ensure Early Project Delivery: India and Japan need to prioritise implementation of existing commitments, particularly UNICORN and defence-technology cooperation, instead of limiting engagement to identifying new possibilities.
2. Turn Technology into Production: Cooperation should move further towards joint development, shipbuilding, Indian production and technology transfer, using Japanese expertise and Indian manufacturing capabilities.
3. Institutionalise Maritime Cooperation: Regular information sharing, naval visits, port access, maintenance and repair arrangements should be developed into a sustained framework for protecting Sea Lines of Communication.
4. Raise Exercise Complexity: The two countries should build on existing exercises by adding unmanned systems, short-notice drills and greater special-operations cooperation to improve interoperability.
5. Expand Third-Country Cooperation: India and Japan should deepen exercises and high-level exchanges with countries such as Indonesia, strengthening their joint contribution to regional peace and stability.
6. Link Defence with Economic Security: Defence cooperation should complement the wider partnership in critical technologies, economic security and resilient supply chains, connecting industrial and technological strengths.

Conclusion

India-Japan defence ties have moved from building institutions and strategic trust towards developing usable military and industrial capabilities. The latest initiatives give this partnership a stronger operational base. Their success will depend on timely implementation, deeper technology and production cooperation, and sustained maritime coordination, enabling both countries to make a practical contribution to a free, open and resilient Indo-Pacific.

Question for practice:

Discuss the recent developments in India-Japan defence cooperation and their significance for the Indo-Pacific region.

Source: The Hindu