Intelligence support is crucial to the development of good foreign policy. Considerable research within the field of intelligence studies focuses on intelligence processes, but this dissertation focuses on the interaction between the president and his chief intelligence advisor. The overlap of the presidents decision cycle and the intelligence cycle is the point where the relationship between these two individuals can have a significant effect upon the level of intelligence success they can experience. I hypothesize that the likelihood of intelligence success is improved when the president and chief of intelligence have a positive relationship, meet frequently, and the intelligence chief does not engage in the active advocacy of policy options. These hypotheses are tested in four case studies that review the interaction between a president and his chief of intelligence. I conclude that the relationship between these two individuals can explain the degree of intelligence success achieved by the pairing.