Nuclear exchange is a theoretical scenario in which two or more countries, armed with nuclear weapons, engage in a full-scale exchange of nuclear warheads. The scale of destruction would be catastrophic and potentially global, with affecting consequences for society, infrastructure, and the planet’s ecosystem. Given the prevalence of nuclear arsenals, nuclear exchange is an ever-present risk and must be a core consideration in all international policy making.
See also: nuclear power, nuclear weapon, nuclear fuel, arms race, mass extinction