Chronicles the development of the French secret services in the modern era, asks some fundamental questions about what France expected and expects from them, an

"The story of German 'code-breaking' successes and radio-espionage during and between the world wars"--Cover.

Here is the ultimate inside history of twentieth-century intelligence gathering and covert activity. Unrivalled in its scope and as readable as any spy novel, A

The “extraordinarily informed” account of how US cryptographers broke Japan’s Purple cipher to change the course of World War II (Kirkus Reviews, starred