“Although the British Home Office knew all about his communist past, by the spring of 1941 Fuchs was working with Peierls and other British scientists on the highly classified Tube Alloys project. In June 1942, Fuchs received British citizenship – by then, he was already passing information to the Soviets about the British bomb program.”

“Although the British Home Office knew all about his communist past, by the spring of 1941 Fuchs was working with Peierls and other British scientists on the highly classified Tube Alloys project. In June 1942, Fuchs received British citizenship – by then, he was already passing information to the Soviets about the British bomb program.”

— Kai Bird