the theory of mutually assured destruction (mad) was used to justify
Mutual assured destruction 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 nuclear weapons by two or more opposing sides would cause the complete annihilation of both the attacker and the defender (see pre-emptive nuclear strike and second strike).[1] It is based on the theory of deterrence, which holds that the threat of using strong weapons against the enemy prevents the enemy's use of those same weapons. The strategy is a form of Nash equilibrium in which, once armed, neither side has any incentive to initiate a conflict or to disarm.
Marx's theory of history Marx saw that each stage or epoch created a new class or invention that would lead to its downfall. However the downfall would not be an automatically negative event, since with each step humanity at large would benefit. Each passing stage would therefore raise the standard of living of the masses while at the same time be doomed to its own downfall because of internal contradictions and class conflicts.