This thesis analyses the policy debate surrounding National Missile Defense in the US during the 1990s from the framework of strategic intelligence failure. It focuses on the Congressional reaction to the release of the national intelligence estimate "NIE 95-19: Emerging Missile Threats to North America During the Next 15 Years" and the establishment of a new interpretation of foreign ballistic missile threats to the continental US. The role that partisan politics plays in the oversight of the US intelligence community is a vital and inescapable one. Yet little academic investigation has been devoted to understanding the political nature of intelligence oversight and its potentially catastrophic impact on intelligence product. Instead ...