The New Nuclear Arms Race: Global Spending Hits a Record High

As geopolitical friction intensifies, the world’s nine nuclear-armed states are pouring billions into arsenals, signalling a shift from cold deterrence to active expansion.

The era of modest stockpiles is officially over. Last year, the world’s nine nuclear-armed nations collectively poured $119 billion into their atomic programmes—a staggering 19 percent jump from 2024. According to new data from the International Campaign to Abolish Nuclear Weapons (ICAN), this spike in nuclear arms spending hits a record high, driven by a frantic race to modernise warheads and shift them from long-term storage onto active delivery systems.

While the total number of warheads has seen a downward trend over the past few decades, currently hovering at 12,187, the narrative of disarmament has stalled. Instead, the focus has shifted to readiness. The United States and Russia, which together command 83 percent of the global stockpile with over 5,000 warheads apiece, are increasingly mirrored by regional powers. China leads global expansion efforts, aggressively building up its capabilities and prompting a domino effect of military investment across the globe.

A Shift in Strategy

The surge in spending isn’t just about having more bombs; it’s about the integration of new technologies. Experts are particularly wary of how the introduction of artificial intelligence into command-and-control systems could lower the threshold for conflict. Susi Snyder, a lead researcher on the ICAN report, put the mood bluntly: she is "terrified." When countries move weapons from storage to deployment, they aren’t just preserving a deterrent—they are signaling a readiness to use it.

This arms race is unfolding against a backdrop of ballooning global military budgets. With total military spending reaching $2.887 trillion in 2025, the investment in nuclear modernisation is symptomatic of a broader shift in international relations. From the US, which sees its defense budget climbing toward $1.51 trillion by 2027, to emerging powers, the appetite for high-tech, lethal hardware is insatiable.

Why it matters

The implications for global stability are profound. We are witnessing a move away from the post-Cold War consensus of gradual reduction. When the world’s superpowers choose to prioritise nuclear modernisation over non-proliferation, it emboldens smaller states to follow suit, creating a more fragmented and dangerous security environment.

This isn't merely a contest of numbers; it is a competition of intent. As states increase their reliance on nuclear posturing to navigate geopolitical tensions, the "nuclear risk" is no longer a historical academic concern—it is a live, expensive, and escalating reality. The shift suggests that for many capitals, the price of "peace" has become an increasingly high-stakes investment in the very weapons meant to ensure it.