Since 9/11, U.S. intelligence organizations have grappled with the use of "open source" information derived from unclassified material, including international newspapers, television, radio, and websites. They have struggled as well with the idea of sharing information with international and domestic law enforcement partners. The apparent conflict between this openness and the secrecy inherent in intelligence provides an opportunity to reconsider what intelligence is, how it is used, and how citizens and their government interact in the interests of national security. That is the goal of...