Context:

• The recent high-level visits between India and South Korea highlight the growing strategic importance of their bilateral partnership.
• What started as limited defence cooperation has expanded into a broader partnership covering defence manufacturing, technology transfer, and military modernisation.
• A key symbol of this collaboration is the K9 Vajra-T artillery programme, developed under the Make in India initiative, which has emerged as the flagship project and opened the door for deeper defence cooperation between the two countries.
• This article highlights the rapid transformation of India–South Korea defence relations from limited defence engagement into a broader strategic partnership encompassing defence manufacturing, technology transfer, military modernisation, and Indo-Pacific security cooperation.

Expanding India–South Korea Defence Cooperation

• India–South Korea defence ties are expanding rapidly, with several new strategic projects under discussion.
• Submarine Cooperation
  • Submarine collaboration has become a major focus area, leveraging South Korea’s strengths in: Conventional submarines; Lithium-ion battery systems; Air-independent propulsion (AIP) technologies.
  • Companies such as Hanwha Ocean are central to this potential partnership.
• Aerospace Collaboration
  • South Korea’s growing aerospace capabilities, including the KF-21 fighter programme and FA-50 light combat aircraft, have opened possibilities for cooperation in: Fighter aircraft technologies; Engines; Avionics etc.
• Maritime and Naval Cooperation
  • As a global shipbuilding leader, South Korea can support India’s maritime ambitions in the Indo-Pacific through collaboration in: Destroyers; Logistics vessels; Submarine support systems; Smart shipyards.
• Expanding Defence Industrial Partnerships
  • Discussions are progressing in several defence sectors, including: Light tanks; Utility helicopters; Future-ready combat vehicles; Military lithium batteries, etc.
  • Defence firms from both countries are exploring joint ventures and industrial partnerships.
  • The partnership is moving beyond conventional arms collaboration toward defence innovation.
  • The proposed Korea-India Defence Accelerator (KIND-X) reflects this forward-looking approach.
• Strategic and Military Engagement
  • Military exchanges and strategic cooperation are also deepening through:
    • Naval exercises
    • Coast guard cooperation
    • Defence dialogues
    • Interoperability-building measures
• Mutual Strategic Benefits
• For India: Access to advanced technology, manufacturing expertise, and defence modernisation support
• For South Korea: Access to India’s large market, strategic location, and long-term industrial opportunities
• Beyond Defence Industry
  • While defence industrial cooperation reflects growing strategic maturity, limiting the partnership only to defence production would be a strategic mistake, given the broader potential of bilateral ties.

India–South Korea Defence Ties in a Changing Indo-Pacific

• The rapidly changing Indo-Pacific geopolitical environment requires India and South Korea to expand defence cooperation beyond industrial collaboration into a broader strategic partnership focused on regional stability, shared security, and resilience.
• The next phase of engagement should involve a formal, forward-looking defence framework that addresses emerging security challenges across the wider Indo-Pacific.
• This partnership must move beyond its current defence-manufacturing emphasis and evolve into a multidimensional strategic relationship grounded in common security interests.

Security Challenges Around the Korean Peninsula

• North Korean Threat - North Korea’s expanding missile and nuclear capabilities continue to pose a major security threat to South Korea.
• Russia–North Korea Cooperation - Growing military cooperation between Russia and North Korea is reshaping the security architecture of Northeast Asia, adding to regional uncertainty.
• China’s Strategic Assertiveness - China’s increasing naval presence around the Korean Peninsula has created new strategic concerns for South Korea. Its expanding influence in the South China Sea is also significant, as a large share of South Korea’s energy imports and maritime trade passes through these waters.

South Korea’s Internal Strategic Challenges

• Demographic Decline - South Korea’s falling population and shrinking pool of military recruits are weakening the long-term sustainability of its conventional defence capabilities.
• Strategic Vulnerability - These internal pressures, combined with a rapidly evolving external threat environment, create a complex security situation that demands deeper long-term strategic cooperation with trusted partners like India.

Need for India–South Korea Strategic Convergence

• India’s strategic planners and defence thinkers need to closely monitor the changing geopolitical situation in South Korea, as ignoring these shifts could affect both South Korea’s security and India’s wider Indo-Pacific interests.
• If India aims to significantly deepen defence-industrial cooperation with South Korea, it must recognise that such cooperation depends on South Korea’s strategic stability, security, and resilience.
• Strengthening Seoul’s ability to manage emerging security challenges should therefore become an important component of the bilateral partnership.
• The Indian Defence Minister’s visit to Seoul should mark the beginning of a new phase in India–South Korea relations, moving beyond defence manufacturing cooperation toward a broader strategic partnership based on shared security interests and Indo-Pacific stability.