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Nuclear Escalation

Heightened great-power competition, ongoing wars involving nuclear states, and collapsing arms-control agreements have pushed the world to the brink. The 2026 Doomsday Clock stands at 85 seconds to midnight—the closest ever—citing a renewed nuclear arms race, regional conflicts with nuclear brinkmanship, and the expiration of key treaties.[[1]](https://thebulletin.org/doomsday-clock/2026-statement/) A September 2026 UN survey of 1,300 global experts found large-scale war now the top-ranked risk, having jumped 16 places since 2024, with 76 percent expecting it to affect a significant share of humanity within seven years.[[2]](https://news.un.org/en/story/2026/09/1168332)
Geoeconomic confrontation and state-based armed conflict dominate short-term outlooks, amplified by nationalism, misinformation, and AI integration into military command systems. Resource strains from climate impacts further raise the odds of miscalculation. A single escalation could trigger a full nuclear exchange, producing nuclear winter, agricultural collapse, and unrecoverable societal breakdown. Current trends in geopolitics, technology, and society make this the most probable path to global catastrophe.