noun
mutual assured destruction; MAD
Cold War strategic doctrine where full-scale use of nuclear weapons by two opposing sides would cause the complete annihilation of both. Often abbreviated as MAD.
冷戦時代、相互確証破壊の理論が核戦争を抑止した。
During the Cold War, the theory of mutual assured destruction deterred nuclear war.
Compound of 相互 (mutual), 確証 (assured confirmation), and 破壊 (destruction), directly translating the English term 'mutual assured destruction'.