Is the world hurtling towards a new and more perilous nuclear age? While diplomats once spoke of reduction and restraint, the Stockholm International Peace Research Institute's (SIPRI) latest sobering assessment reveals a stark reversal: global nuclear stockpiles are swelling, modernisation is accelerating, and the fragile peace held since the Cold War's end is cracking under the weight of great-power rivalry and regional flashpoints.
The report warns that decades of gradual reductions in global nuclear stockpiles may soon come to an end, raising concerns about a renewed arms race at a time when conflicts in the Gulf, eastern Europe and Asia are reshaping international security strategies.
India's strategic calculations are being tested amidst rising regional tensions. The 88-hour-long military standoff with Pakistan in May 2025 has underscored the persistent risks along the border, with fresh indications of deeper involvement by China and Turkey in support of Islamabad. In response, New Delhi is under mounting pressure to further strengthen its defence capabilities.
Compounding these concerns, the latest SIPRI report marks a significant shift: for the first time, it has explicitly claimed a non-zero number of deployed nuclear warheads for India, assessing that the country currently maintains around 12 deployed warheads. Although India's overall nuclear arsenal remains significantly smaller than those of the United States, Russia and China, this assessment highlights the gradual evolution of India's nuclear deterrence posture in an increasingly complex and uncertain security environment.
SIPRI estimates that the world's nine nuclear-armed states collectively possess approximately 12,187 nuclear warheads. Of these, about 9,745 are held in military stockpiles for potential use while an estimated 4,012 warheads are deployed with operational missile and aircraft forces. Between 2,100 and 2,200 deployed warheads remain on high operational alert, primarily in the arsenals of the US and Russia.
The report highlights China as the fastest-growing nuclear power. Beijing is estimated to possess around 620 nuclear warheads and continues to expand its strategic forces at an unprecedented pace. By January 2026, China had reportedly loaded hundreds of missiles into newly constructed silo fields in northern regions while continuing construction of additional silos in eastern mountainous areas. SIPRI notes that China could potentially field as many intercontinental ballistic missiles as either Russia or the US by the end of this decade, although its total warhead inventory would still be substantially smaller.
For India, China's rapid nuclear modernisation remains a critical strategic concern. Indian security planners have long viewed China's expanding military capabilities, combined with its close strategic relationship with Pakistan, as key drivers behind New Delhi's efforts to strengthen its own deterrent capabilities. The SIPRI assessment that India may occasionally deploy a limited number of warheads on missiles during peacetime underscores the changing nature of regional deterrence dynamics.
The report comes at a particularly volatile moment in global affairs. The ongoing conflict in West Asia, involving direct military confrontations and the risk of wider regional escalation, has heightened concerns about the potential role of nuclear weapons in international crises. Although none of the active combatants in the current conflict has openly threatened nuclear use, analysts warn that prolonged instability in the region could draw in major powers with nuclear capabilities, increasing the risk of strategic miscalculation.
The broader international security environment has become increasingly fragile. Russia's war in Ukraine continues to shape nuclear rhetoric in Europe while tensions in the Indo-Pacific remain elevated over territorial disputes and military competition. Against this backdrop, the traditional assumptions that governed nuclear deterrence during the post-Cold War period are being tested.
SIPRI director Karim Haggag warned that influential political voices across several countries are increasingly presenting nuclear weapons as essential guarantees of national security. Such thinking, he argued, risks making defence strategies more dependent on nuclear arsenals and could significantly increase the chances of future crises escalating beyond conventional warfare.
“The dangers associated with nuclear weapons are growing due to advances in weapon technology, the breakdown of arms control agreements, and heightened geopolitical tensions,†Haggag noted. He also pointed to the May 2025 military confrontation between India and Pakistan as an example of how regional conflicts involving nuclear-armed states continue to challenge established deterrence theories.
Despite ongoing modernisation efforts by all nine nuclear-armed states, Russia and the US remain the dominant nuclear powers. Together, they account for roughly 83 per cent of the world's usable nuclear warheads. While their stockpiles remained relatively stable during 2025, both countries continue to invest heavily in next-generation missile systems, submarines, bombers and command-and-control infrastructure.
For India, maintaining a credible minimum deterrent remains the cornerstone of nuclear policy. New Delhi continues to adhere officially to its ‘no first use' doctrine, although debates over the future of that policy periodically emerge within strategic circles. The emergence of new technologies, including hypersonic weapons, missile defence systems and advanced surveillance capabilities, is forcing policymakers worldwide to reconsider traditional deterrence models.
The SIPRI report also highlights growing concerns about the weakening of the global nuclear non-proliferation framework. The 2026 Review Conference of the Nuclear Non-Proliferation Treaty (NPT) concluded without a final consensus document, marking the third consecutive failure to achieve agreement among member states.
Experts warn that the absence of progress on arms control, combined with ongoing nuclear modernisation programmes, could undermine confidence in the international non-proliferation regime. The uncertain future of the New START treaty framework between Washington and Moscow further adds to concerns about the lack of effective mechanisms to limit strategic competition.
As conflicts continue to simmer across multiple regions, from West Asia to eastern Europe and the Indo-Pacific, SIPRI's latest findings serve as a reminder that the global nuclear landscape is becoming more complex and potentially more dangerous. For India, situated between two nuclear-armed neighbours and navigating an increasingly contested geopolitical environment, the challenge will be to preserve strategic stability while adapting to a rapidly evolving security order.
The clock is ticking louder. As silos multiply, submarines prowl deeper and political rhetoric grows more cavalier about the unthinkable, SIPRI's warning stands as a red alert for humanity: the era of nuclear restraint is eroding, and with it, the guardrails that have prevented catastrophe for eight decades. For India—wedged between two nuclear rivals and navigating great-power competition in the Indo-Pacific—the path forward demands vigilance, technological edge and unwavering commitment to credible minimum deterrence without succumbing to an unrestrained arms race.
Unless the world's leaders rediscover the wisdom of arms control and dialogue, the coming years risk transforming nuclear weapons from instruments of last resort into tools of first choice in moments of crisis. The alternative is a future where miscalculation in the Himalayas, the Taiwan Strait or the plains of eastern Europe could plunge civilisation into darkness. This is not alarmism—it is arithmetic written in warheads. The question is no longer whether risks are rising, but whether we still possess the collective will to pull back from the brink.
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