GS3Science & Technology·01 Jul 2026·4 min read

SIPRI Report Highlights Operational Deployment

The Stockholm International Peace Research Institute's 2026 Yearbook reported that India has deployed 12 operationally assigned nuclear warheads, sparking concerns about the country's nuclear doctrine. This development comes amidst a global trend of increased reliance on nuclear weapons, with the world's nine nuclear-armed states collectively possessing an estimated 12,187 nuclear warheads. India's deployment is strategically significant, with its estimated stockpile of 190 nuclear warheads and a 'no first use' policy that re a pillar of its nuclear doctrine

•SIPRI Flags 12 Operational Warheads: What It Means for India's Nuclear Posture

SIPRI Flags 12 Operational Warheads: What It Means for India's Nuclear Posture

The Stockholm International Peace Research Institute (SIPRI) released its 2026 yearbook in June, classifying twelve of India’s estimated 190 nuclear warheads as “operationally deployed” – i.e., mated with delivery systems and ready for use. While the figure appears modest, it marks the first time SIPRI has identified any Indian warheads as actively positioned, prompting renewed scrutiny of India’s long‑standing “no first use” (NFU) doctrine.

The SIPRI assessment is based on open‑source intelligence and satellite imagery that track missile‑launch platforms, submarine patrols and air‑force basing patterns.

▸India’s total nuclear stockpile is estimated at 190 warheads.
▸Twelve warheads are now recorded as operationally assigned to active forces.
▸This is the first instance SIPRI has distinguished operational warheads from the broader reserve.

The report notes that the move reflects a shift from a purely symbolic deterrent to a posture that emphasises survivable second‑strike capability.

India’s No First Use Policy

India’s NFU policy, first articulated in the 1999 nuclear doctrine, pledges never to launch a nuclear strike first, nor to use nuclear weapons against non‑nuclear‑weapon states. At the UN High‑Level Meeting on the International Day for the Total Elimination of Nuclear Weapons in September 2025, diplomat Sibi George reaffirmed this commitment.

▸The policy is enshrined in the 2003 Nuclear Doctrine document, which stresses “credible minimum deterrence”.
▸Domestic analysts have occasionally advocated a conditional or hybrid first‑use stance, but none have altered the official line.
▸NFU remains a cornerstone of India’s strategic stability, especially vis‑à‑vis Pakistan.

Did You Know? India’s NFU policy is the only declared “no first use” stance among the world’s nine nuclear‑armed states, giving it a unique diplomatic lever in non‑proliferation forums.

Second‑Strike Capability and Delivery Systems

A credible NFU doctrine hinges on the assurance that a retaliatory strike can survive a first‑strike on Indian forces. This survivability is termed “second‑strike capability”. India is modernising its triad to ensure such depth.

▸The Nuclear Command Authority (NCA) oversees the deployment of land‑based Agni‑V missiles, capable of reaching any point in China.
▸Two nuclear‑powered ballistic missile submarines (SSBNs) are under construction, each expected to carry multiple SLBMs (submarine‑launched ballistic missiles).
▸Air‑launched platforms such as the Mirage 2000 and the upcoming Rafale‑derived nuclear strike aircraft are being upgraded for low‑observable missions.

These steps aim to guarantee that even after a massive first strike, sufficient warheads remain to deliver a devastating retaliatory blow.

Strategic Environment: China and Pakistan

India’s deterrent calculus cannot be isolated from the broader Asian nuclear landscape. China’s arsenal has swelled to roughly 620 warheads, with a rapid expansion of sea‑based assets, while Pakistan’s stockpile is estimated at around 160.

▸China’s sea‑based deterrent now includes at least two nuclear‑armed submarines operating in the Indian Ocean.
▸India’s SSBN programme is calibrated to cover both Chinese and Pakistani targets, reflecting a dual‑front strategic requirement.
▸The development of long‑range hypersonic glide vehicles by China adds pressure on India to accelerate its own advanced delivery research.

Thus, the twelve operational warheads serve both as a signal to Beijing and a reassurance to New Delhi’s own security establishment.

Institutional and Legal Safeguards

India’s nuclear architecture is underpinned by a layered legal and security framework designed to prevent accidental or unauthorized use.

▸The Nuclear Command Authority (NCA) – the apex body that authorises any nuclear launch – operates under strict civilian‑military coordination.
▸The Central Industrial Security Force (CISF) provides armed security to all nuclear installations, from reactors to missile depots.
▸The Atomic Energy (Amendment) Act 2015 expands private‑sector participation while tightening regulatory oversight, ensuring that any new technology complies with safety norms.
▸The Inter‑State Nuclear Accident Coordination Protocol 2024 links state emergency operation centres with the National Disaster Response Force for rapid radiological response.

These mechanisms collectively reinforce the credibility of India’s NFU stance by minimizing the risk of inadvertent escalation.

India’s evolving deterrent posture, as reflected in SIPRI’s latest figures, underscores a delicate balance: maintaining a credible minimum deterrence while adhering to a no‑first‑use doctrine in an increasingly volatile strategic neighbourhood. The challenge for policymakers will be to keep institutional safeguards robust, modernise delivery platforms, and engage diplomatically to prevent the erosion of the global non‑proliferation regime.