Fears Mount: Nuclear Arms Race Rekindled

Two political leaders shaking hands during a meeting

President Trump’s decision to resume nuclear testing after a 34-year moratorium has sparked international alarm, with Russia warning of a catastrophic global chain reaction that could unravel decades of nuclear restraint and thrust the world into unprecedented danger.

Story Highlights

Trump announced resumption of US nuclear testing in October 2025, ending America’s 34-year moratorium established in 1992
Russian Ambassador warns of dangerous “domino effect” triggering worldwide nuclear weapons testing and development
New START treaty expired in February 2026, eliminating the last major arms control agreement between Washington and Moscow
US justifies testing resumption citing alleged covert nuclear tests by China and Russia, claims both countries deny

Trump Administration Ends Decades of Nuclear Restraint

President Trump announced in October 2025 that the United States would resume nuclear testing, breaking a moratorium that has held since 1992. The administration justifies this decision by claiming China has planned tests with yields in the hundreds of tonnes and alleging Russia conducted low-yield tests, though both nations deny these accusations. US Assistant Secretary of State Christopher Yeaw stated America would return to testing on an “equal basis” with rivals, arguing Washington must respond to what it views as a new testing standard set by competitors.

Russia Issues Stark Warning at United Nations

Russian Ambassador Gennady Gatilov addressed the UN Conference on Disarmament in Geneva on February 24, 2026, delivering a pointed warning about America’s testing decision. Gatilov declared that US withdrawal from its national moratorium would artificially trigger a domino effect, placing full responsibility on Washington. Moscow emphasized the decision raises additional doubts about implementing the Comprehensive Nuclear-Test-Ban Treaty, which was adopted in 1996 but never entered into force due to lack of ratification by key nuclear powers.

Arms Control Framework Collapses Amid Rising Tensions

The New START treaty, the last major bilateral arms control agreement between America and Russia, expired in February 2026 without renewal or replacement negotiations. This treaty had capped deployed nuclear warheads and provided crucial transparency mechanisms between the two nations. Mackenzie Knight-Boyle, senior research associate with the Nuclear Information Project at the Federation of American Scientists, explained that without New START, both countries will very likely revert to worst-case scenario assumptions about each other’s actions, potentially triggering reciprocal warhead uploads and escalatory cycles.

Loss of Verification Increases Miscalculation Risks

The treaty’s expiration eliminates detailed verification processes that previously provided information about nuclear activities, exercises, and storage sites. Eliana Johns from the Federation of American Scientists emphasized this loss of transparency as particularly dangerous, noting there is now a sense of less predictability between the two nations. This opacity creates conditions for miscalculation and escalation, as neither side can verify the other’s actions or intentions. The breakdown comes as mutual accusations replace the transparency mechanisms that previously helped prevent misunderstandings and dangerous assumptions.

Global Proliferation Threat Looms Large

Experts warn the situation carries risk of destroying the global non-proliferation system established after the Cold War. The domino effect Russia warns about would likely manifest as other nuclear-armed states including France, the United Kingdom, China, India, and Pakistan reconsidering their own testing moratoriums. Non-nuclear states may accelerate weapons programs, particularly in Asia and the Middle East, where regional tensions already run high. Independent analysts across institutions agree the collapse of arms control frameworks increases nuclear war risks and proliferation dangers, potentially leading to uncontrolled expansion of arsenals worldwide.

The Trump administration frames its position as necessary self-defense against strategic competitors who allegedly violated testing norms first, positioning America as reactive rather than initiatory. This perspective aligns with the administration’s broader approach to national security, prioritizing American strength and refusing to accept disadvantageous agreements. However, the timing coincides with multiple destabilizing developments including North Korea’s warnings about nuclear domino effects and Russia’s claims of testing nuclear-powered cruise missiles. Without diplomatic pathways currently visible to reverse deteriorating international security conditions, the world faces its most precarious nuclear moment since the Cold War ended over three decades ago.