Intelligence veteran Mark M. Lowenthal details how the intelligence community's history, structure, procedures, and functions affect policy decisions. With his friendly prose, he demystifies a complicated and complex process. Rich with examples and anecdotes, Intelligence also includes bolded key terms, an acronym list, suggested readings and websites, and a list of major intelligence reviews or proposals. This new, fully-updated fourth edition highlights many crucial recent developments in reforms, ethics, and transnational issues, including: -the actual implementation of the Director of National Intelligence (DNI) reforms and their successes and strains; -the ongoing legal, operational, and ethical issues raised by the war against terrorism; -the growth of transnational issues, such as WMD; -fresh coverage of analytic standards and analytic transformation; -more in-depth explanation of geospatial, signal, and human intelligence; -a new discussion of the lessons of 9/11; - and, the growing politicization of intelligence in the United States, specifically through the declassified use of National Intelligence Estimates (NIEs).