Analyzes nine wartime and postwar defections, highlighting motivations, risks, and counter-intelligence significance.A well-informed defector is the most dangerous counter-intelligence commodity because it takes a spy to catch a spy. Very occasionally, an agent, especially a mole or an intelligence professional, will make a mistake and incriminate themselves, but usually it is a denunciation, a tip, or a vague clue from a defector that will provide the vital inform...

Spies have made an extraordinary impact on the history of the 20th Century, but fourteen in particular can be said to have been demonstrably important. As one might expect, few are household names, and it is only with the benefit of recently declassified files that we can now fully appreciate the nature of their contribution. The criteria for selection have been the degree to which each can now be seen to have had a very definite influence on a specific course of events, either directly, b...

In August 1909, a kindly, balding, figure named Mansfield Smith-Cumming was summoned to London by Admiral Alexander Bethell, Director of Naval Intelligence. He was to assume the inaugural position of Chief – more famously known as 'C – of what has become

The author of The Kompromat Conspiracy reveals the truth behind Great Britain's secret World War II group.What did SOE really achieve during the Second World War? Why were so many agents parachuted into enemy hands? Who chose to back Communist guerrillas in Yugoslavia, Hungary, Romania, Albania, Greece and Malaya in preference to other anti-Axis movements? In this newly revised edition, Nigel West strips away the secrecy that has surrounded the Special Ope...

Over the past fifty years, Nigel West has been involved in almost every espionage-related investigation, breakthrough or revelation that you can think of. His molehunts have led to the unmasking of spies within MI5, MI6 and the CIA and the identification of numerous others – some of whom were crucial to the Allied victory in the Second World War and would have died without any public recognition if not for him.His first encounter with the intelligence community was a lecture given ...

The go-to intelligence expert and author of MI6 has "provided the clearest review of GCHQ and its predecessors in a publicly available book" ( Firetrench).Signal intelligence is the most secret, and most misunderstood, weapon in the modern espionage arsenal. As a reliable source of information, it is unequalled, which is why Government Communications Headquarters, almost universally known as GCHQ, is several times larger than the two smaller, but m...

While many of President Xia Jinping’s increasingly aggressive foreign policies, manifested by expansion into the South China Sea, trade confrontation with Australia, and political suppression in Hong Kong, have become obvious, there has been a covert dimension that has gone largely unreported outside the Allied intelligence community.Beijing’s Ministry of State Security, or MSS, has increasingly shifted its priorities to hostile penetration of the CIA. That this is the case has bee...

"… a valuable introduction to the role of defectors in counterintelligence operations and a fine contribution to intelligence literature." -Studies in Intelligence A well-informed defector is the most dangerous counter-intelligence commodity because it takes a spy to catch a spy. Very occasionally, an agent, especially a mole or an intelligence professional, will make a mistake and incriminate themselves, but usually it is a denunciation, a tip, or a vague clue from a defector that will pr...

"Nigel West has presented the most complete account of the Abwehr to date. It will serve as a valuable reference work." — Studies in IntelligenceAs the Second World War progressed and defeat for Hitler's Third Reich in all theatres became ever more certain, the tight Abwehr network, built so effectively by its head, Admiral Canaris, began to unravel. High-level defections to the Allies and bitter disputes with the Sicherheitsdienst (SD) added to a collapse in morale. Most notably wa...

"...presents an excellent and concise narrative of the Abwehr's global intelligence network. West draws from hundreds of firsthand debriefing and summary reports including disclosed sources not previously available to scholars."—American Intelligence JournalModern historians have consistently condemned the Abwehr, Germany's military intelligence service, and its SS equivalent, the Sicherheitsdienst (SD), as incompetent and even corrupt organizations. However, newly declassified MI5,...

On Monday, 4 March 2019, Sergei Skripal and his 33-year-old daughter Yulia collapsed in the centre of Salisbury in Wiltshire. Both were suffering the effects of A-234, a third-generation Russian-manufactured military grade Novichok nerve agent. As three suspects, all GRU officers, were quickly identified, it was also established that the door handle to the Skripals’ suburban home had been contaminated with the toxin.Whilst the Skripals had lived in the cathedral city for the past s...

It was inevitable that the Allies would invade France in the summer of 1944: the Nazis just had to figure out where and when. This job fell to the Abwehr and several other German intelligence services. Between them they put over 30,000 personnel to work studying British and American signals traffic, and achieved considerable success in intercepting and decrypting enemy messages. They also sent agents to England – but they weren't to know that none of them would be successf...