Nate Hagens would describe 'nuclear exchange' as the perilous and catastrophic scenario in which two or more nations engage in the deployment of nuclear weapons against each other. This term encapsulates not just the immediate devastation of life and infrastructure caused by the explosions, but also the long-term environmental fallout and socio-economic disruption that follows. Hagens would emphasize the existential risk posed by such an event, highlighting the profound and perhaps irreversible implications for human civilization and biodiversity. Within his broader context of understanding energy, resources, and human behavior, he might also underscore the cognitive shortfalls and systemic vulnerabilities that often underpin the geopolitical tensions leading to such an exchange.

See also: nuclear power, nuclear weapon, nuclear fuel, arms race, mass extinction