While covert operations grab the headlines, intelligence analysis, carried out by CIA officers and their colleagues who are more professorial than conspiratorial, is more important to America's security. This is a primer to that analytic function, the authors' updating of Sherman Kent's classic of 40 years ago, Strategic Intelligence for American World Policy. Primarily focused on the executive branch, it treats Congress as an overseer and supporter; the real revolution-Congress as a coequal consumer of intelligence-lies just at the edges of its pages.