"Jeffery's book is perhaps the most authentic account one will ever read about how intelligence really works." --"The Washington Times"Britain 's Special Intelligence Service, commonly called MI6, is not only the oldest and most storied foreign intelligence unit in the world-it is also the only one [...]

A groundbreaking book, this unprecedented study is the authoritative account of the best-known intelligence organization in the world. Essential reading for anyone interested in the history of espionage, the two world wars, modern British government and the conduct of international relations in the [...]