This is a study of the strategic challenges that Soviet ballistic missile defense (BMD) programs may pose for the Western alliance. David Yost suggests that the challenges for Western policy stem partly from Soviet military programs, Soviet arms control policies, and Soviet public diplomacy campaigns, and partly from the West's own intra-alliance disagreements and lack of consensus about Western security requirements.

By reviewing the history of Western assessments of Soviet BMD, Yost shows that long before the American strategic defense initiative (SDI) was launched, Soviet BMD...