New Delhi: India has increased its estimated nuclear warhead stockpile to 190, up from 180 last year, according to the latest annual assessment by the Stockholm International Peace Research Institute (SIPRI). The report highlights India’s continuing efforts to modernize its nuclear forces amid a rapidly evolving security environment in Asia.

India Adds to Nuclear Deterrence Capability

SIPRI’s Yearbook 2026 indicates that India added around ten warheads to its arsenal over the past year, reflecting a gradual but consistent expansion of its strategic capabilities. While the increase is modest compared to some other nuclear powers, it signals New Delhi’s focus on maintaining a credible deterrent in an increasingly competitive regional landscape.

India’s nuclear arsenal is now estimated to be larger than Pakistan’s, which is believed to possess around 170 warheads. However, China remains far ahead, with its stockpile continuing to grow at a much faster pace.

Focus on Modernisation and Advanced Missile Systems

The report notes that India’s nuclear programme is no longer centered solely on increasing numbers. Instead, the emphasis is increasingly shifting toward modernization, survivability, and technological sophistication.

India has been developing longer-range ballistic missiles, canister-launched systems capable of rapid deployment, and advanced technologies such as Multiple Independently Targetable Re-entry Vehicles (MIRVs), which allow a single missile to carry multiple nuclear warheads aimed at different targets.

These developments are seen as part of a broader effort to enhance the credibility and flexibility of India’s nuclear deterrent.

Strengthening the Sea-Based Nuclear Leg

A major component of India’s nuclear strategy is the expansion of its sea-based deterrent. Nuclear-powered ballistic missile submarines and submarine-launched ballistic missiles are becoming increasingly important to India’s defense planning.

Military analysts believe a stronger sea-based nuclear force provides India with a more secure second-strike capability, ensuring that the country can respond even if land-based nuclear assets come under attack.

This triad of land, air, and sea-based nuclear delivery systems is considered a cornerstone of modern nuclear deterrence.

China Factor Looms Large

Security experts have long argued that India’s nuclear modernization is influenced more by China’s growing military and nuclear capabilities than by Pakistan alone.

China’s rapidly expanding missile inventory, advancements in strategic weapons technology, and increasing military presence across the Indo-Pacific have prompted India to reassess its long-term deterrence requirements.

The widening gap between Chinese and Indian nuclear stockpiles remains a significant strategic challenge for New Delhi.

Global Nuclear Competition Intensifies

SIPRI warns that the world is entering a new phase of nuclear competition, with several nuclear-armed states either expanding or modernizing their arsenals.

After decades of gradual reductions in global nuclear stockpiles, major powers are once again investing heavily in nuclear weapons, advanced delivery systems, and strategic deterrence infrastructure.

The trend reflects growing geopolitical rivalries, heightened security concerns, and the weakening of traditional arms-control frameworks.

India’s Doctrine Remains Unchanged

Despite the expansion of its arsenal, India continues to officially adhere to its doctrine of maintaining a credible minimum deterrent and its longstanding No First Use (NFU) policy.

Defence experts say the latest increase in warhead numbers should be viewed not as a shift in doctrine, but as part of a broader effort to ensure that India’s nuclear forces remain effective, survivable, and capable of deterring potential adversaries in an increasingly uncertain security environment.

As strategic competition intensifies across Asia, India’s expanding and modernizing nuclear arsenal is likely to remain a key element of its national security architecture in the years ahead.