"Written specifically for students and general readers by scholars, former intelligence officers, and other experts, Encyclopedia of Intelligence and Counterintelligence provides a unique background perspective for viewing history and current events. In easy-to-understand, non-technical language, it explains how espionage works as a function of national policy; traces the roots of national security; profiles key intelligence leaders, agents, and double-agents; discusses intelligence concepts and techniques; and profiles the security organizations and intelligence history and policies of nations around the world. As a special feature, the set also includes forewords by former CIA Director Robert M. Gates and former KGB Major General Oleg Kalugin that help clarify the evolution of intelligence and counterintelligence and their crucial roles in world affairs today."
"What is here, then? Within the above caveats, most major, many minor, and some obscure books dealing in some fashion with intelligence matters are listed. As often as possible, these are accompanied by comments or reviews from myself, Alec Chambers, published reviews, bibliographers, authors who have chosen to comment on other writers' works, or some other source.
Almost every article published in both of the academically oriented intelligence journals, Intelligence and National Security and International Journal of Intelligence and Counterintelligence, is at least listed, and many of these listings include substantive or other comments based on my or someone else's reading of the article. Listed articles from a substantial number of other intelligence or national security-oriented journals, magazines, newsletters, and the like also often will carry notations as to content or thrust, as will news and commentary items gleaned from the major U.S. newspapers or other media, including the Internet. The source of comments and reviews is clearly indicated in all instances."