Mutual assured destruction, or mutually assured destruction (MAD), is a doctrine of military strategy and national security policy in which a full-scale use of high-yield weapons of mass destruction by two opposing sides would effectively result in the complete, utter and irrevocable annihilation of both the attacker and the defender, becoming thus a war that has no victory nor any armistice but only effective reciprocal destruction. It is based on the theory of deterrence according to which the deployment, and implicit menace of use, of strong weapons is essential to threaten the enemy in order to prevent the use by said-enemy of the same weapons against oneself. The strategy is effectively a form of Nash equilibrium in which neither side, once armed, has any rational incentive either to initiate a conflict or to disarm (presuming neither side considers self-destruction an acceptable outcome).
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Famous quotes containing the words mutual, assured and/or destruction:
“I have overlived the generation with which mutual labors & perils begat mutual confidence and influence.”
—Thomas Jefferson (1743–1826)
“I have been assured by a very knowing American of my acquaintance in London, that a young healthy child, well nursed, is at a year old, a most delicious, nourishing, and wholesome food, whether stewed, roasted, baked, or boiled; and I make no doubt that it will equally serve in a fricassee, or a ragout.”
—Jonathan Swift (1667–1745)
“Fear not, we are of the nature of the lion, and cannot descend to the destruction of mice and such small beasts.”
—Elizabeth I (1533–1603)