India Commissions INS Aridhaman, Enhancing Nuclear Deterrence Capabilities

• •INS Aridhaman is India's third nuclear-powered ballistic missile submarine, commissioned on April 3, 2026.
• •The submarine enhances India's nuclear triad, allowing for nuclear strikes from land, air, and sea.
• •Development of the K-4 missile, intended for use with INS Aridhaman, is still ongoing, impacting readiness.

On April 3, 2026, India commissioned the INS Aridhaman, its third nuclear-powered ballistic missile submarine, enhancing its nuclear deterrent capabilities at sea. This submarine, part of India's nuclear triad, is designed to launch nuclear weapons from land, air, and sea, significantly improving India's retaliatory capabilities against potential adversaries. The INS Aridhaman is larger than its predecessors, capable of carrying more long-range nuclear-tipped missiles. However, while the submarine represents a significant advancement, the K-4 missile it is meant to carry is still undergoing development and testing, limiting its immediate operational readiness. The commissioning of INS Aridhaman is a culmination of decades of efforts under the Advanced Technology Vessel project, showcasing India's commitment to strengthening its naval nuclear capabilities. Despite these advancements, challenges remain, including the need for further development of long-range submarine-launched ballistic missiles and reform in nuclear doctrine and operational practices.