Espionage

Lucky Break: the Zimmermann Telegram

David Nicholas reveals the skill and good fortune behind Britain’s First World War intelligence operation, and the coup by which the Zimmermann Telegram was cracked, tipping the balance in getting the US to join the Allied war effort.

Radioactive Leak

Andrew Cook compares notes from Soviet sources and recently released MI5 files on Klaus Fuchs, the British nuclear physicist and spy who helped the Soviet Union develop the atom bomb.

Spying for the Kaiser

Popular obsession with German espionage in the early 1900s proved to be well-founded, as Nicholas Hiley shows in an examination of the prewar activites of a group of agents controlled by the 'Kaiser's Spymaster'.