Full Description
The strategic doctrine that nuclear deterrence operates because both superpowers possess sufficient nuclear weapons to survive a first strike and deliver a devastating retaliatory blow. MAD held that an aggressor could never launch a nuclear attack without ensuring its own destruction in return. The doctrine was formalised during the McNamara era at the US Pentagon in the 1960s and shaped nuclear weapons development — particularly the emphasis on submarine-launched missiles that could survive a first strike.
Critical Perspective
MAD was simultaneously the most rational and most terrifying basis for international order in modern history. It functioned as a deterrent throughout the Cold War, but its stability depended on rational actors, functioning communication systems, and no accidents. The Cuban Missile Crisis demonstrated how close the doctrine came to failure — decisions made by individuals under extreme stress, based on incomplete information, twice brought the world close to nuclear war.
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