MAD ( countervalue ) was discontinued as a policy under President Carter when Poseidon & Minuteman III made counterforce viable. The Soviets made a similar tra

MAD ( countervalue ) was discontinued as a policy under President Carter when Poseidon & Minuteman III made counterforce viable. The Soviets made a similar transition, moving away from city-crushing 25MT unitary warheards to much smaller silo-busting MIRVs. MAD did its job through the 60s but faded away as technology improved.