India expands nuclear arsenal to around 190 warheads, says SIPRI Yearbook 2026
The Stockholm International Peace Research Institute (SIPRI) Yearbook 2026 estimates that India has expanded its nuclear arsenal to approximately 190 warheads by early 2026, up from 180 warheads in 2025 — an addition of 10 warheads over the year.
India's modernisation programme is now explicitly focused on developing longer-range delivery systems capable of reaching targets throughout China, in addition to its longstanding focus on Pakistan.
SIPRI reported progress on Multiple Independently Targetable Re-entry Vehicle (MIRV) technology — allowing a single missile to carry multiple nuclear warheads and strike separate targets — as part of India's strategic weapons development.
India now holds 20 more warheads than Pakistan, which SIPRI estimates at 170 warheads. China's arsenal stands at 620 warheads, with SIPRI projecting it could exceed 1,000 by 2030.
The SIPRI report also noted that India is among nuclear-armed states moving some warheads from de-mated storage to higher operational readiness — warheads mounted on missiles even during peacetime — reflecting a shift toward a "high-alert peacetime posture."
India's Nuclear Doctrine and No First Use Policy
India's nuclear doctrine, formalised in a 2003 government document building on a draft released in August 1999, is anchored on three pillars: Credible Minimum Deterrence (CMD), No First Use (NFU), and massive punitive retaliation against any nuclear first strike.
Key Details
- NFU commitment: India will not be the first to use nuclear weapons in any conflict; nuclear weapons are reserved for retaliation only.
- Exception clause (2003 doctrine): India reserves the right to respond with nuclear weapons to a "major attack against India or Indian forces anywhere" using biological or chemical weapons.
- India conducted its second series of nuclear tests (Pokhran-II / Operation Shakti) on 11 and 13 May 1998 in Rajasthan, testing five devices including a thermonuclear weapon — formally declaring India a nuclear-weapons state.
- Command authority: The Nuclear Command Authority (NCA), headed by the Prime Minister, exercises political control over nuclear weapons; the Strategic Forces Command (SFC) is responsible for operational custody.
The shift toward higher operational readiness (pre-mated warheads on missiles) raises questions about whether India's de facto nuclear posture is diverging from its declared NFU doctrine — a distinction SIPRI and strategic analysts now flag explicitly.
SIPRI and Global Nuclear Stockpile Monitoring
The Stockholm International Peace Research Institute (SIPRI), founded in 1966 and based in Sweden, is an independent international institute tracking armaments, disarmament, and international security. Its annual Yearbook is the authoritative reference for global nuclear weapons data.
Key Details
- SIPRI's nuclear weapons estimates are based on open-source analysis including satellite imagery, government statements, procurement data, and expert assessments — not classified intelligence.
- Nine states possess nuclear weapons: USA, Russia, UK, France, China, India, Pakistan, Israel (undeclared), and North Korea.
- Global nuclear warheads (SIPRI 2026): approximately 12,000+ total (operational + reserve + retired).
- SIPRI distinguishes between "deployed" (on delivery systems ready to launch), "stored" (in reserve but available), and "retired/dismantled" warheads.
India's trajectory — from 180 to 190 warheads in one year, combined with MIRV development and higher operational readiness — signals a qualitative and quantitative shift in South Asian nuclear dynamics that SIPRI's 2026 data makes visible for the first time.
MIRV Technology and Strategic Implications
Multiple Independently Targetable Re-entry Vehicle (MIRV) technology allows a single ballistic missile to carry multiple nuclear warheads, each guided to a separate target. MIRV capability significantly enhances a country's second-strike potential and complicates adversary missile defence systems.
Key Details
- India's Agni-V ICBM is the primary delivery system being adapted for MIRV capability; it has a range exceeding 5,000 km — sufficient to reach targets across China.
- Agni-V was first tested in 2012; it is road-mobile and capable of carrying a nuclear payload of around 1.5 tonnes.
- MIRV missiles are harder to intercept because a single missile can overwhelm missile defence with multiple warheads plus decoys.
- India's MIRV development is a direct response to China's expanding arsenal and its deployment of advanced missile defence systems.
SIPRI's 2026 report specifically highlights India's MIRV progress as part of its modernisation arc targeting China, representing a significant upgrade in India's deterrence posture beyond simple warhead count increases.
- India's nuclear warheads (SIPRI 2026): ~190 (up from 180 in 2025).
- Pakistan's warheads (SIPRI 2026): ~170.
- China's warheads (SIPRI 2026): 620; projected to exceed 1,000 by 2030.
- India added ~10 warheads in the past year.
- Key delivery systems: Agni-V (range: 5,000+ km), Agni-IV, Agni-III, Prithvi series, K-4 (submarine-launched).
- India conducted Pokhran-II tests: 11 and 13 May 1998 (5 tests, including thermonuclear device).
- India's NFU doctrine declared: August 1999 (draft); formalised 2003.
- Strategic Forces Command (SFC): operational custody of nuclear weapons.
- Nuclear Command Authority (NCA): political control, chaired by the Prime Minister.
- SIPRI founded: 1966, Stockholm, Sweden.
- MIRV: one missile, multiple warheads, separate targets — key capability India is developing.