How did mutually assured destruction shape U.S.-Soviet nuclear strategy?

Mutually assured destruction (MAD) was a cornerstone of Cold War nuclear strategy, predicated on the principle that a nuclear attack by one superpower would trigger an overwhelming counterattack, resulting in the annihilation of both sides. This doctrine fundamentally shaped U.S.-Soviet relations by establishing a "nuclear stalemate" intended to deter aggression through the guarantee of mutual destruction.12

To ensure this deterrent remained credible, the U.S. developed the nuclear triad—comprising manned bombers, land-based ballistic missiles, and nuclear submarines—to guarantee a second strike capability. By the mid-1960s, U.S. Secretary of Defense Robert S. McNamara shifted doctrine toward "assured destruction," targeting Soviet population centers to maintain strategic parity.12

However, the doctrine faced significant criticism. Opponents argued that relying on an indefinite stalemate did not secure long-term defense interests and that both superpowers continued seeking a clear nuclear advantage. This led to alternative strategies, such as "countervailing" options and the Strategic Defense Initiative, which sought to escape the constraints of MAD. Ultimately, the arms race was moderated by arms control efforts like SALT and START, which prioritized stability and eventual reductions over pure destructive parity.132