India's Nuclear-Submarine Program Escalates Arms Race with Pakistan

India's advancement in nuclear submarine capabilities significantly heightens regional security tensions with Pakistan. This development has broader implications for South Asian military balance.

India has accelerated its nuclear submarine program, with the recent commissioning of the INS Arihant into service as part of its strategic nuclear deterrence. The INS Arihant is India's first indigenously developed ballistic missile submarine, designed to operate with the capability to launch K-15 Sagarika missiles, each having a range of 750 kilometers.

The evolution of India's underwater nuclear capabilities is seen as a direct response to Pakistan's own military advancements, particularly in its submarine and missile capabilities. Pakistan's increasing focus on both conventional and unconventional military capabilities is intensifying anxieties in New Delhi, reflecting a continuing arms race in South Asia, which has long been marked by fluctuating allegiances and tensions.

This escalation in nuclear capabilities complicates the security environment, as both countries enhance their military postures. This naval arms race is coupled with the respective investments both nations are making in their defense sectors, as India’s overall defense budget for 2023 is estimated at approximately $76 billion, further fueling the competition.

Technically, the INS Arihant is a nuclear-powered submarine capable of carrying up to 12 K-15 Sagarika missiles. Each of these submarines provides India with a credible second-strike capability, fundamentally altering the strategic landscape in the region. Pakistan continues to develop its own nuclear deterrent, focusing on both land-based and sea-based systems to ensure robust defensive measures against perceived threats.

Consequences of this nuclear expansion are profound: the threat of heightened military confrontations persists amid ongoing regional instability. Analysts predict that this arms race may force both India and Pakistan into a precarious security dilemma, whereby each side feels compelled to further enhance its military capabilities to counterbalance the other's advancements, risking potential escalations into conflict.