Credible minimum deterrence has endured for two decades, but the strategic environment has not. Critically examine whether India's nuclear doctrine needs revision.

India's nuclear doctrine, operationalised by the Cabinet Committee on Security on 4 January 2003, rests on credible minimum deterrence, No First Use (NFU), non-use against non-nuclear-weapon states, and massive retaliation under civilian political control [1][2]. Its text has not changed; the neighbourhood, and the technology of war, have.

The case for revision

• "Minimum" was sized for one adversary. A force calibrated to punish a single attacker strains when it must simultaneously deter two nuclear neighbours whose postures have moved in different directions.
• NFU raises, not lowers, force requirements. Since India pledges to strike only in retaliation [3], survivability — not economy — drives arsenal size; "minimum" and "assured second strike" pull against each other.
• Disruptive technologies attack decision time. Cyber intrusion into warning systems and compressed flight times squeeze the interval a retaliation-only doctrine depends on. The 2003 decision is silent on spoofed warning or a cyber-enabled false alarm.
• An undefined exception. Retaliation is permitted after a "major" biological or chemical attack [1], but "major" is nowhere defined, inviting adversaries to assume the worst reading.

The case against revision

• Predictability is the deterrent. The doctrine survived Kargil and two decades of crises; frequent rewriting teaches rivals that the next version is also temporary.
• NFU is diplomatic capital. The government's stated position in Parliament is that Pakistan's adoption of NFU "would make an enormous contribution" to regional peace [4]; abandoning it forfeits that ask.
• Capability is already answering the question. The commissioning of INS Arighaat (2024) strengthens the sub-surface leg — officially the most potent leg of the triad and the guarantor of second-strike credibility under NFU — without a word of the doctrine changing [5].

The sharper need is clarification, not rewriting: the CCS can define the chemical-biological threshold, harden command-and-control against cyber deception, and reaffirm NFU on record. Continuity of principle with candour about new risks keeps deterrence credible while preserving India's standing as a responsible nuclear power.