Nuclear Escalation

Accelerating great-power rivalries, especially involving the U.S., Russia, and China, have eroded arms-control treaties and increased reliance on hair-trigger alert postures. The integration of artificial intelligence into command-and-control systems, coupled with hypersonic delivery vehicles, compresses decision timelines to minutes, vastly amplifying the risk of miscalculation. A localized confrontation—such as over Taiwan or the Baltic states—could rapidly engulf multiple nuclear states. Even a limited exchange would loft enough soot into the stratosphere to cause a decade-long nuclear winter, slashing global food production and collapsing interconnected supply chains. This abrupt climate shock, layered atop existing environmental stress, would unravel societies far more abruptly than gradual warming or novel pathogens. While other threats loom, the sheer number of deployed warheads and the historical near-misses make intentional or accidental nuclear war the most probable catalyst for a swift, terminal global crisis.