This volume explores the contemporary challenges to US national cybersecurity. Taking stock of the field, it features contributions by leading experts working at the intersection between academia and government and offers a unique overview of some of the latest debates about national cybersecurity. These contributions showcase the diversity of approaches and issues shaping contemporary understandings of cybersecurity in the West, such as deterrence and governance, cyber intelligence and big data, international cooperation, and public-private collaboration. The volume's main contribution lies in its effort to settle the field around three main themes exploring the international politics, concepts, and organization of contemporary cybersecurity from a US perspective. Related to these themes, this volume pinpoints three pressing challenges US decision makers and their allies currently face as they attempt to govern cyberspace: maintaining international order, solving conceptual puzzles to harness the modern information environment, and coordinating the efforts of diverse partners. The volume will be of much interest to students of cybersecurity, defense studies, strategic studies, security studies, and IR in general.

The author examines in detail the organization of the U.S. intelligence community, its attempts to monitor and predict the development of Soviet forces from the early days of the cold war, and how these attempts affected American policy and weapons production. Originally published in 1987. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

World War II found the country of Albania fighting a war within a war. In addition to the threat all of Europe faced from the Germans, Albania was engaged in a civil war between the Nazi-sponsored Ballists and the Communist Partisans led by Enver Hoxha. While America was reluctant to get involved in the civil conflict, the United States was naturally inclined to lend support to whoever fought the Nazis - even if that meant an alliance with the Communists. On a cold November night in 1943, Dale McAdoo (code named Tank) secretly landed on the Albanian coast with a team of OSS (Office of Strategic Services) agents, including Ismail Carapizzi, an Albanian guide and interpreter who would later be murdered. McAdoo's team, the first of many to follow, set up a base of operations in a deep water level cave on the rocky Albanian coast that served the OSS as it carried out its mission of gathering intelligence to support the Allied war effort and harass the Germans. McAdoo was joined by Captain Tom Stefan (code name Art), an Albanian-speaking OSS officer from Boston, whose assignment was to join Hoxha at his remote mountain headquarters and bond with the reclusive Communist leader to benefit the OSS. This volume describes how the OSS aided the Communist-led Partisans in an attempt to weaken the Nazi cause in Albania and neighboring Italy. The book presents an in-depth look at the small core of hardened men who comprised these highly specialized teams, including each member's background and his special fitness for his wartime role behind enemy lines. The American and British presence in Albania during World War II and the later deterioration of Hoxha's relations with Captain Tom Stefan and the OSS mission are discussed in detail. Firsthand interviews with still-living participants and extensive onsite research make this book a unique resource for a little-known dramatic piece of World War II history.

‘One of our very best writers on France.’ Antony Beevor After publishing an acclaimed biography of Jean Moulin, leader of the French Resistance, Patrick Marnham received an anonymous letter from a person who claimed to have worked for British Intelligence during the war. The ex-spy praised his book but insisted that he had missed the real ‘treasure’. The letter drew Marnham back to the early 1960s when he had been taught French by a mercurial woman – a former Resistance leader, whose SOE network was broken on the same day that Moulin was captured and who endured eighteen months in Ravensbrück concentration camp. Could these two events have been connected? His anonymous correspondent offered a tantalising set of clues that seemed to implicate Churchill and British Intelligence in the catastrophe. Drawing on a deep knowledge of France and original research in British and French archives, War in the Shadows exposes the ruthless double-dealing of the Allied intelligence services and the Gestapo through one of the darkest periods of the Second World War. It is a story worthy of Le Carré, but with this difference – it is not fiction. ‘A melange of Le Grand Meaulnes and The Spy Who Came in from the Cold. It is unforgettable.’ Ferdinand Mount, TLS, Books of the Year ‘A masterly analysis, impeccably presented.’ Allan Mallinson, Spectator ‘Fascinating… Marnham has a vast and scholarly knowledge of this often treacherous world.’ Caroline Moorehead, Literary Review

In September 2017, North Korea shocked the world by exploding the most powerful nuclear device tested anywhere in 25 years. Months earlier, it had conducted the first test flight of a missile capable of ranging much of the United States. By the end of that year, Kim Jong Un, the reclusive state's ruler, declared that his nuclear deterrent was complete. Today, North Korea's nuclear weapons stockpile and ballistic missile arsenal continues to grow, presenting one of the most serious challenges to international security to date. Internal regime propaganda has called North Korea's nuclear forces the country's "treasured sword," underscoring the cherished place of these weapons in national strategy. Fiercely committed to self-reliance, Kim remains determined to avoid unilateral disarmament. Kim Jong Un and the Bomb tells the story of how North Korea-once derided in the 1970s as a "fourth-rate pipsqueak" of a country by President Richard Nixon-came to credibly threaten the American homeland by November 2017. Ankit Panda explores the contours of North Korea's nuclear capabilities, the developmental history of its weapons programs, and the prospects for disarming or constraining Kim's arsenal. With no signs that North Korea's total disarmament is imminent over the next years or even decade, Panda explores the consequences of a nuclear-armed North Korea for the United States, South Korea, and the world.

This volume discusses the challenges the future holds for different aspects of the intelligence process and for organisations working in the field. The main focus of Western intelligence services is no longer on the intentions and capabilities of the Soviet Union and its allies. Instead, at present, there is a plethora of threats and problems that deserve attention. Some of these problems are short-term and potentially acute, such as terrorism. Others, such as the exhaustion of natural resources, are longer-term and by nature often more difficult to foresee in their implications. This book analyses the different activities that make up the intelligence process, or the 'intelligence cycle', with a focus on changes brought about by external developments in the international arena, such as technology and security threats. Drawing together a range of key thinkers in the field, The Future of Intelligence examines possible scenarios for future developments, including estimations about their plausibility, and the possible consequences for the functioning of intelligence and security services. This book will be of much interest to students of intelligence studies, strategic studies, foreign policy, security studies and IR in general.

This book critically analyses the concept of the intelligence cycle, highlighting the nature and extent of its limitations and proposing alternative ways of conceptualising the intelligence process. The concept of the intelligence cycle has been central to the study of intelligence. As Intelligence Studies has established itself as a distinctive branch of Political Science, it has generated its own foundational literature, within which the intelligence cycle has constituted a vital thread - one running through all social-science approaches to the study of intelligence and constituting a staple of professional training courses. However, there is a growing acceptance that the concept neither accurately reflects the intelligence process nor accommodates important elements of it, such as covert action, counter-intelligence and oversight. Bringing together key authors in the field, the book considers these questions across a number of contexts: in relation to intelligence as a general concept, military intelligence, corporate/private sector intelligence and policing and criminal intelligence. A number of the contributions also go beyond discussion of the limitations of the cycle concept to propose alternative conceptualisations of the intelligence process. What emerges is a plurality of approaches that seek to advance the debate and, as a consequence, Intelligence Studies itself. This book will be of great interest to students of intelligence studies, strategic studies, criminology and policing, security studies and IR in general, as well as to practitioners in the field.

Home-grown terrorists equipped by a foreign power are not a new phenomenon. During the Second World War, Hitler's Germany made sustained efforts to inflict a terror campaign on the streets of Britain through the use of secret agents and agents provocateurs. The aim was to blow up military, industrial, transport and telecommunication targets, to lower morale among the civilian population and disrupt the war effort. Even before the outbreak of war, the Nazis provided the IRA with assistance for their plan to sabotage the British mainland. Prior to their planned invasion in the summer of 1940, the Nazis were also keen to recruit members of the Welsh and Scottish Nationalist Parties to engage in sabotaging British targets and, over the course of the war, infiltrated dozens of trained agents from countries including Norway, Denmark, Holland, France and Cuba. What happened to the myriad plots to blow up Britain? We know that intelligence obtained from decrypted enemy messages via Bletchley Park and double agents like ZIGZAG, SUMMER and TATE alerted MI5 to some of these spies' arrivals, but what about the others? And how successful were MI5's efforts to fake acts of sabotage and arrange media coverage to fool the enemy into thinking their agents were still at large and on task? In this book, Bernard O'Connor, a noted wartime espionage historian, tells the complete story of the successes and failures of the Nazi terror offensive on mainland Britain during 1938-1944.

Since the 9/11 terrorist attacks in the United States, serious concerns were raised on domestic and international security issues. Consequently, there has been considerable interest recently in technological strategies and resources to counter acts of terrorism. In this context, this book provides a state-of-the-art survey of the most recent advances in the field of counterterrorism and open source intelligence, demonstrating how various existing as well as novel tools and techniques can be applied in combating covert terrorist networks. A particular focus will be on future challenges of open source intelligence and perspectives on how to effectively operate in order to prevent terrorist activities.

The story of one of the most astonishing episodes of espionage and deception of World War Two.This is the tale of two men: Claude Dansey, deputy head of MI6, and double agent Henri Dericourt, who was planted with the rival wartime secret service - SOE - at Dansey's instructions. From there began a terrifying trail of destruction. After making contact with Dansey in 1942, Dericourt was recruited to SOE as the man desperately needed to organize top-secret flights in and out of occupied French territory. But at the same time Dericourt was in touch with German counter-espionage in Paris. As SOE congratulated themselves on a new asset, Dericourt gave the Nazis everything; every flight, operation and coded message he could. Against a background of unprecedented deception and betrayal, Dansey's secret MI6 operation eventually led to the arrest of nearly one thousand men and women, hundreds of whom died in concentration camps. How did it go so wrong? A shocking, enthralling account of a devastating episode in the history of the British secret services, perfect for readers of Ben MacIntyre.

"A Classic in Counterintelligence -- Now Back in Print"

Originally published in 1987, "Thwarting Enemies at Home and Abroad" is a unique primer that teaches the principles, strategy, and tradecraft of counterintelligence (CI). CI is often misunderstood and narrowly equated with security and catching spies, which are only part of the picture. As William R. Johnson explains, CI is the art of actively protecting secrets but also aggressively thwarting, penetrating, and deceiving hostile intelligence organizations to neutralize or even manipulate their operations.

Johnson, a career CIA intelligence officer, lucidly presents the nuts and bolts of the business of counterintelligence and the characteristics that make a good CI officer. Although written during the late Cold War, this book continues to be useful for intelligence professionals, scholars, and students because the basic principles of CI are largely timeless. General readers will enjoy the lively narrative and detailed descriptions of tradecraft that reveal the real world of intelligence and espionage. A new foreword by former CIA officer and noted author William Hood provides a contemporary perspective on this valuable book and its author.

This book critically analyses the concept of the intelligence cycle, highlighting the nature and extent of its limitations and proposing alternative ways of conceptualising the intelligence process. The concept of the intelligence cycle has been central to the study of intelligence. As Intelligence Studies has established itself as a distinctive branch of Political Science, it has generated its own foundational literature, within which the intelligence cycle has constituted a vital thread - one running through all social-science approaches to the study of intelligence and constituting a staple of professional training courses. However, there is a growing acceptance that the concept neither accurately reflects the intelligence process nor accommodates important elements of it, such as covert action, counter-intelligence and oversight. Bringing together key authors in the field, the book considers these questions across a number of contexts: in relation to intelligence as a general concept, military intelligence, corporate/private sector intelligence and policing and criminal intelligence. A number of the contributions also go beyond discussion of the limitations of the cycle concept to propose alternative conceptualisations of the intelligence process. What emerges is a plurality of approaches that seek to advance the debate and, as a consequence, Intelligence Studies itself. This book will be of great interest to students of intelligence studies, strategic studies, criminology and policing, security studies and IR in general, as well as to practitioners in the field.

Some of the individuals who played key roles in the success of Bletchley Park in reading the secret communications of Britain's enemies during the Second World War have become well-known figures. However, the man who created and led the organisation based there, from its inception in 1919 until 1942, has, surprisingly, been overlooked - until now. In 1914 Alastair Denniston, who had been teaching French and German at Osborne Royal Navy College, was one of the first recruits into the Admiralty's fledgling codebreaking section which became known as Room 40. There a team drawn from a wide range of professions successfully decrypted intercepted German communications throughout the First World War. After the Armistice, Room 40 was merged with the British Army's equivalent section - MI.1 - to form the Government Code and Cypher School (GC&CS). Initially based in London, from August 1939 GC&CS was largely located at Bletchley Park, with Alastair Denniston as its Operational Director. Denniston was moved in 1942 from military to civilian intelligence at Berkeley Street, London. Small at first, as Enigma traffic diminished towards the end of the Second World War, diplomatic and commercial codebreaking became of increasing importance and a vital part of Britain's signal intelligence effort. GC&CS was renamed the Government Communications Headquarters (GCHQ) in June 1946, and moved to the outskirts of Cheltenham. It continues to be the UK's signal intelligence gathering organisation. With the support and assistance of the both the Denniston family and GCHQ, Joel Greenberg, author of Gordon Welchman, Bletchley Park's Architect of Ultra Intelligence, has produced this absorbing story of Commander Alexander Alastair' Guthrie Denniston OBE, CBE, CMG, RNVR, a man whose death in 1961 was ignored by major newspapers and the very British intelligence organisation that was his legacy. [Denniston was a] great man in whose debt all English-speaking people will remain for a very long time, if not for ever. That so few of them should know exactly what he did towards achievement of victory in World War I and II is the sad part of the untold story of his life and of his great contribution to that victory.' -William Friedman, The doyen of American cryptography One of the reasons for the success of Bletchley Park, and something that I and Alastair Denniston's other successors have striven to maintain in GCHQ, is the organisation's ability to make space to allow individuals to flourish, both in isolation, and within teams. He had already worked out that the forthcoming war and the profusion of mechanical encryption devices needed a new sort of cryptanalyst to complement the existing staff.' -Sir Ian Lobban, Director of GCHQ 2008 to 2014

Of German stock dating back to 1530 in Saxony, Eric George Ackermann GM was born on the Isle of Wight in 1919 and became a leading figure in the world of signals and electronic intelligence. As a Junior Scientific Officer at the Telecommunication Research Establishment, Boscombe Down, with an honorary commission in the Royal Air Force, he made numerous flights over occupied territory searching for, monitoring and destroying Germany's Wuerzburg, Knickebein and X Band radar systems. Much of his research was passed to the highest levels of wartime government, and was highly prized, ensuring that tactical plans could be executed that took full advantage of known, top secret German intelligence. A host of secret missions to assess the enemy's radar capabilities were carried out in North Africa, Gibraltar and Italy. This new and engaging biography explores the various highs and lows of his operational deployment at the vanguard of tactical intelligence operations in these exciting theaters of war. Winner of the George Medal for conspicuous gallantry, his efforts weren't confined to the offices of war. He saw conflict up close and personal, and was therefore aware of the urgency of his endeavours, and the extent to which his findings made a difference. The end of the war was a cause of great celebration, but it did not signal the end of Ackermann's role, far from it. He was to play a major part in the setting up and implementation of a string of listening stations built along the borders of Soviet Bloc countries which were destined to glean a wealth of invaluable post-war intelligence. Further work in aeronautics and satellite construction in the States followed, meaning the reach of Ackermann's influence could be allowed to stretch yet further. Yet despite the might and scale of his achievement, he has never before been the subject of a book-length study. The authors, Peter Jackson and David Haysom, have made every effort to rectify that in this new publication which is sure to appeal to aviation enthusiasts, as well as the more general reader curious to gain new insights into twentieth century intelligence practices and their often far-reaching consequences.

This book is the first full history of South African intelligence and provides a detailed examination of the various stages in the evolution of South Africa's intelligence organizations and structures. Covering the apartheid period of 1948-90, the transition from apartheid to democracy of 1990-94, and the post-apartheid period of new intelligence dispensation from 1994-2005, this book examines not only the apartheid government's intelligence dispensation and operations, but also those of the African National Congress, and its partner, the South African Communist Party (ANC/SACP) - as well as those of other liberation movements and the 'independent homelands' under the apartheid system. Examining the civilian, military and police intelligence structures and operations in all periods, as well as the extraordinarily complicated apartheid government's security bureaucracy (or 'securocracy') and its structures and units, the book discusses how South Africa's Cold War 'position' influenced its relationships with various other world powers, especially where intelligence co-operation came to bear. It outlines South Africa's regional relationships and concerns - the foremost being its activities in South-West Africa (Namibia) and its relationship with Rhodesia through 1980. Finally, it examines the various legislative and other governance bases for the existence and operations of South Africa's intelligence structures - in all periods - and the influences that such activities as the Rivonia Trial (at one end of the history) or the Truth and Reconciliation Commission (at the other end) had on the evolution of these intelligence questions throughout South Africa's modern history. This book will be of great interest to all students of South African politics, intelligence studies and international politics in general.

The history of Special Operations Executive (SOE) seems to spring a never-ending run of surprises, and here are some more. This book explores the mysterious world of the tools SOE used for their missions of subversion and sabotage. An often grim reality is confronted that is more akin with the world of James Bond and Q's workshop than previously believed. Written by two scientists, one of whom served in the SOE and one who was tasked with clearing up after it was disbanded; their insider knowledge presents a clear account of the way in which SOE's inventors worked. From high explosive technology to chemical and biological devices; from the techniques of air supply to incendiarism; from camouflage to underwater warfare; and from radio communications to weaponry. SOE: The Scientific Secrets is a revelation about the tools that allowed the murky world of spying and spies to operate during wartime.

The magnificent, unrivaled history of codes and ciphers -- how they're made, how they're broken, and the many and fascinating roles they've played since the dawn of civilization in war, business, diplomacy, and espionage -- updated with a new chapter on computer cryptography and the Ultra secret.

Man has created codes to keep secrets and has broken codes to learn those secrets since the time of the Pharaohs. For 4,000 years, fierce battles have been waged between codemakers and codebreakers, and the story of these battles is civilization's secret history, the hidden account of how wars were won and lost, diplomatic intrigues foiled, business secrets stolen, governments ruined, computers hacked. From the XYZ Affair to the Dreyfus Affair, from the Gallic War to the Persian Gulf, from Druidic runes and the kaballah to outer space, from the Zimmermann telegram to Enigma to the Manhattan Project, codebreaking has shaped the course of human events to an extent beyond any easy reckoning. Once a government monopoly, cryptology today touches everybody. It secures the Internet, keeps e-mail private, maintains the integrity of cash machine transactions, and scrambles TV signals on unpaid-for channels. David Kahn's The Codebreakers takes the measure of what codes and codebreaking have meant in human history in a single comprehensive account, astonishing in its scope and enthralling in its execution. Hailed upon first publication as a book likely to become the definitive work of its kind, The Codebreakers has more than lived up to that prediction: it remains unsurpassed. With a brilliant new chapter that makes use of previously classified documents to bring the book thoroughly up to date, and to explore the myriad ways computer codes and their hackers are changing all of our lives, The Codebreakers is the skeleton key to a thousand thrilling true stories of intrigue, mystery, and adventure. It is a masterpiece of the historian's art.

This title takes you inside the eye-opening life and work of the US military's former top paranormal spy. As the operations and training officer for the Defense Intelligence Agency's Psychic Intelligence Unit, Dames and his team used the practice of remote viewing to uncover accurate military intelligence without putting personnel at risk in hostile countries. In "Tell Me What You See", Dames takes you behind the scenes of some of his most fascinating, mind-bending cases, revealing how he and his cohorts solved some of the world's greatest mysteries and uncovered some of the world's most deeply buried secrets. This is a memoir that takes you inside the secret history of the US military's Psychic Intelligence Unit. It reveals true stories and fascinating secrets uncovered by the military's remote viewing teams - from intelligence on Soviet missile sites to the whereabouts of missing POWs in Vietnam to the location of the Ark of the Covenant * Maj. Dames is the most popular guest on George Noory's exceedingly popular radio show "Coast to Coast AM". For anyone fascinated by the intersection of the military and the mysterious, "Tell Me What You See" is an amazing and completely absorbing must-read.

Security intelligence continues to be of central importance to the contemporary world: individuals, organizations and states all seek timely and actionable intelligence in order to increase their sense of security. But what exactly is intelligence? Who seeks to develop it and to what ends? How can we ensure that intelligence is not abused? In this third edition of their classic text, Peter Gill and Mark Phythian set out a comprehensive framework for the study of intelligence, discussing how states organize the collection and analysis of information in order to produce intelligence, how it is acted upon, why it may fail and how the process should be governed in order to uphold democratic rights. Fully revised and updated throughout, the book covers recent developments, including the impact of the Snowden leaks on the role of intelligence agencies in Internet and social media surveillance and in defensive and offensive cyber operations, and the legal and political arrangements for democratic control. The role of intelligence as part of 'hybrid' warfare in the case of Russia and Ukraine is also explored, and the problems facing intelligence in the realm of counterterrorism is considered in the context of the recent wave of attacks in Western Europe. Intelligence in an Insecure World is an authoritative and accessible guide to a rapidly expanding area of inquiry - one that everyone has an interest in understanding.

"Preventing Catastrophe" is written by two authors who are experienced "Washington hands" and who understand the interplay between intelligence and policymaking. Both have been personally involved, in the United States and overseas, in pursuing national and international measures to stop the proliferation of weapons of mass destruction. Their extensive experience is evident in this book, which puts the Iraqi WMD issue in proper perspective, explains the challenge of monitoring small clandestine programs, and explains how the effort to prevent terrorist acquisition and use of WMD differs from preventing their acquisition and use by nation states. At the same time, the authors are able to make a complex subject understandable to non-technical experts, making this book a useful teaching tool, especially for those who have little or no knowledge or experience in US national security decision making.
"National intelligence and international inspections are necessary to create confidence that violations of non-proliferation commitments are detected in time to permit appropriate action. Both must be pursued with professionalism and critical minds avoiding poor intelligence or cosmetic inspections. The issues studied thoroughly and with good judgment in this welcome volume by Graham and Hansen were intensely controversial in the case of Iraq but remain central to international counter-proliferation efforts."--Hans Blix, Executive Chairman of the Weapons of Mass Destruction Commission

A CUNNING CHRONICLE OF THE 50 CODES THAT ALTERED THE COURSE OF HISTORY AND CHANGED THE WORLD From the bestselling author of Bletchley Park Brainteasers and The Scotland Yard Puzzle Book. There have been secret codes since before the Old Testament, and there were secret codes in the Old Testament too. Almost as soon as writing was invented, so too were the devious means to hide messages and keep them under the wraps of secrecy. In 50 Codes that Changed the World, Sinclair McKay explores these uncrackable codes, secret cyphers and hidden messages from across time to tell a new history of a secret world. From the temples of Ancient Greece to the court of Elizabeth I; from antique manuscripts whose codes might hold prophecies of doom to the modern realm of quantum mechanics, you will see how a few concealed words could help to win wars, spark revolutions and even change the faces of great nations. Here is the complete guide to the hidden world of codebreaking, with opportunities for you to see if you could have cracked some of the trickiest puzzles and lip-chewing codes ever created. ----------------------- Praise for Sinclair McKay's books: 'This book [The Secret Life of Bletchley Park] seems a remarkably faithful account of what we did, why it mattered, and how it all felt at the time by someone who couldn't possibly have been born then. - THE GUARDIAN [Bletchley Park Brainteasers] is outrageously difficult but utterly fascinating. - THE EXPRESS 'Sinclair McKay's account of this secret war of the airwaves in [Secret Listeners] is as painstakingly researched and fascinating as his bestselling The Secret Life Of Bletchley Park, and an essential companion to it.' - DAILY MAIL

Through dramatic incidents tells for the first time the full story of the development of Cold War naval intelligence from the end of WWII to the breakup the Soviet Union in 1991, from both sides, East and West. Unlike other accounts, which focus on submarine confrontations and accidents, the authors cover all types of naval intelligence, human collection (racing with the Soviets to capture Nazi subs, successful and losing spies and defectors), signal intelligence (surface, air, satellite and navy commando teams in balaclavas launched by speed boats from subs), acoustic (passive underwater arrays and tapping phone lines), and the aerial and space reconnaissance. The authors give details of operations in all these areas, some of which were witnessed first hand.

""A new light is shed on the spy ships incidents of the 1960s and on submarine intrusions in Swedish waters. Excerpts of the Soviet Navy instructions on UFOs and accounts of Soviet naval encounters with unexplained objects are also published for the first time outside of Russia; and much more.""

Anticipating Surprise, originally written as a manual for training intelligence analysts during the Cold War, has been declassified and condensed to provide wider audiences with an inside look at intelligence gathering and analysis for strategic warning. Cynthia Grabo defines the essential steps in the warning process, examines distinctive ingredients of the analytic method of intelligence gathering, and discusses the guidelines for assessing the meaning of gathered information. Since the September 11, 2001 terrorist attacks on America, intelligence collection and analysis has been hotly debated. In this book, Grabo suggests ways of improving warning assessments that better convey warnings to policymakers and military commanders who are responsible for taking appropriate action to avert disaster.

Decision makers matching wits with an adversary want intelligence -- good, relevant information to help them win. Intelligence can gain these advantages through directed research and analysis, agile collection, and the timely use of guile and theft. Counterintelligence is the art and practice of defeating these endeavors. Its purpose is the same as that of positive intelligence -- to gain advantage -- but it does so by exploiting, disrupting, denying, or manipulating the intelligence activities of others. The tools of counterintelligence include security systems, deception, and disguise: vaults, mirrors, and masks.

In one indispensable volume, top practitioners and scholars in the field explain the importance of counterintelligence today and explore the causes of -- and practical solutions for -- U.S. counterintelligence weaknesses. These experts stress the importance of developing a sound strategic vision in order to improve U.S. counterintelligence and emphasize the challenges posed by technological change, confused purposes, political culture, and bureaucratic rigidity. "Vaults, Mirrors, and Masks" skillfully reveals that robust counterintelligence is vital to ensuring America's security.

Published in cooperation with the Center for Peace and Security Studies and the George T. Kalaris Memorial Fund, Edmund A. Walsh School of Foreign Service, Georgetown University.