For more than two decades, India’s nuclear doctrine has been treated as a settled matter. Built around the principles of No First Use and assured retaliation, it has projected restraint while signalling resolve. It reflected a strategic culture that sought credibility without courting recklessness. But doctrines, like technologies, cannot remain frozen in time. The uncomfortable question India must now confront is whether assumptions forged in the early years of this century can still withstand the realities of the next. The world that shaped India’s nuclear thinking was one in which concealment was possible and uncertainty worked in favour of stability.
Mobile launchers could disappear into vast terrain. Hardened facilities promised a degree of protection. The belief that enough weapons would survive an enemy’s first strike to permit devastating retaliation underpinned the logic of deterrence. Today, that logic faces unprecedented strain. Persistent satellite constellations, artificial intelligence enabled data analysis, advanced sensors, long-range precision missiles and hypersonic delivery systems have transformed the strategic landscape. The battlefield is increasingly transparent. Targets that once relied on mobility and secrecy may now be monitored, tracked and revisited with startling speed.
The time available for political leaders to assess information and make decisions during crises is shrinking. This evolution carries dangers beyond technological competition. The fear that nuclear forces could become vulnerable creates incentives for haste and miscalculation. States may feel pressure to act before losing their capabilities. Conventional attacks on strategic assets could be interpreted as preparations for nuclear disarmament. The distinction between conventional and nuclear conflict, once relatively clear, risks becoming dangerously blurred.
For India, the answer is not to abandon the restraint that has long distinguished its nuclear posture. Calls for a dramatic departure from No First Use or for an unconstrained expansion of the arsenal deserve careful scrutiny rather than emotional endorsement. Strategic credibility rests not merely on possessing weapons but on maintaining political control, clarity of purpose and the confidence of adversaries that retaliation remains inevitable. Yet prudence should not become complacency. A doctrine drafted for one technological era cannot be exempt from periodic review.
India has repeatedly adapted its military institutions to changing threats, whether in the aftermath of the Kargil conflict or through reforms to higher defence management. Its nuclear posture should be no exception. A serious reassessment of survivability, command-and control resilience and the balance among land, air and sea-based deterrent capabilities is overdue.
The expansion of sea-based assets, investment in secure communications and rigorous examination of emerging technologies should form part of that exercise. Such a review need not signal weakness or alarmism. On the contrary, it would demonstrate strategic maturity. The credibility of deterrence has always depended less on inherited doctrines than on their continued relevance. In an age of rapid technological disruption, national security cannot rely on assumptions that no longer command certainty. The purpose of revisiting doctrine is not to make war more likely. It is to ensure that the prospect of war remains unthinkable.