Aspects of this topic are discussed in the following places at Britannica.
...quarter with the development of multiple independently targeted reentry vehicles (MIRVs), by which several warheads, each aimed at a different target, could be carried on one missile, and antiballistic missiles (ABMs), which might allow one side to strike first while shielding itself from retaliation. In the arcane province of strategic theory, therefore, offense (long-range missiles)...
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