The expiration of the New START treaty on February 5 has thrust the world into uncharted nuclear territory, with the United States and Russia no longer bound by limits on their deployed strategic warheads. Signed in 2010 and extended in 2021, the pact capped each side at 1,550 warheads and 700 delivery vehicles, serving as the last major pillar of bilateral arms control amid fraying relations. Now, as Presidents Donald Trump and Vladimir Putin chart divergent paths, China's rapidly expanding nuclear arsenal emerges as the wildcard threatening global stability.
China's nuclear buildup has accelerated dramatically, with U.S. intelligence estimating its stockpile could surpass 1,000 warheads by 2030—up from around 500 today. Beijing has tested new hypersonic missiles, expanded silo fields in western deserts, and deployed advanced submarines capable of striking the U.S. mainland. Unlike the transparency afforded by New START's verification regime, China's program remains opaque, fueling Pentagon concerns that it could soon rival or exceed U.S. and Russian capabilities in certain domains.
Trump, back in the White House after his 2024 victory, has repeatedly criticized past arms control deals as favoring adversaries. He has pushed for a broader treaty encompassing China, arguing that excluding Beijing renders bilateral U.S.-Russia pacts obsolete. Putin, however, shows little interest in multilateral talks, viewing them as a ploy to constrain Russia's arsenal while China races ahead unchecked. Recent Kremlin statements emphasize Moscow's right to modernize its forces without limits, especially after NATO's eastward expansion and the Ukraine conflict.
The misalignment between Trump and Putin extends beyond rhetoric. Trump has floated incentives like easing sanctions to lure Russia into negotiations, but Putin demands concessions on Ukraine first—talks that have stalled. Meanwhile, U.S. officials warn of a potential three-way arms race, with simulations showing catastrophic escalation risks if deterrence falters. Defense hawks in Washington advocate boosting the U.S. triad of bombers, submarines, and missiles, while diplomats scramble for interim measures.
Analysts see grim portents in this vacuum. Without New START's data exchanges and inspections, miscalculations abound—Russia's recent flight tests and U.S. B-21 bomber unveilings signal mutual distrust. China's silence amplifies the tension, as its leaders prioritize "strategic depth" amid Taiwan Strait saber-rattling. For now, deterrence holds, but the post-START era demands bold diplomacy to avert a new nuclear age of peril.
