Spying on the nuclear bear : Anglo-American intelligence and the Soviet bomb by Michael S Goodman

"The book charts new territory, revising traditional accounts of Anglo-American nuclear relations and intelligence cooperation. It reveals how intelligence was collected: the roles played by defectors, aerial reconnaissance, and how novel forms of espionage were perfected to penetrate the Soviet nuclear program. It documents what conclusions were drawn from this information, and assesses the resulting estimates. " - Editorial Reviews