The End of Arms Control

Leaders of the world’s three major nuclear powers—the United States, Russia, and China—dramatically shifted their defense postures toward a potential new nuclear arms race this week as long-standing international arms control agreements continued to collapse. Amidst heightening geopolitical tensions in Europe and the Indo-Pacific, these superpowers are moving away from decades of diplomatic restraint in favor of rapid modernization and expansion of their atomic arsenals. This shift marks a significant departure from the post-Cold War era of disarmament, driven by a mutual lack of trust and the perceived need for advanced deterrence in an increasingly volatile global security landscape. The decline of the regulatory framework began in earnest with the suspension of the New START treaty between Washington and Moscow, which had served as the final remaining pillar of nuclear stability between the two nations. Russia’s decision to halt inspections and data sharing, combined with China’s refusal to engage in formal transparency talks regarding its own rapid silo construction, has created a transparency vacuum. Military analysts suggest that without these safeguards, the risk of miscalculation or an unintended escalation has reached its highest point since the 1960s. Technological advancements are further complicating the security environment as all three nations invest heavily in hypersonic delivery systems and artificial intelligence-integrated command structures. Unlike the bilateral competition of the previous century, the current landscape is a complex trilateral dynamic. The United States now faces the strategic challenge of deterring two near-peer nuclear adversaries simultaneously, leading to internal debates about whether to increase the total number of deployed warheads for the first time in years. This pivot reflects a broader global trend where military might is once again taking precedence over treaty-based diplomacy.