Nuclear secrecy

2-stage nuclear fission/fusion weapon

German-born British theoretical physicist and atomic spy (1911-1988)

American couple executed for spying for the Soviet Union

Italian nuclear physicist (1913–1993)

Alleged Soviet spy

espionage related to the creation of nuclear weapons

orders for action in the event of a nuclear attack on UK government

American biochemist and molecular biologist (1913–2002)

WWII Soviet nuclear-research spies in the West

First official account of the Manhattan Project and the Allied effort to develop atomic bombs during World War II written by physicist Henry DeWolf Smyth

Atomic spy for the Soviet Union (1922–2014)

"Off we go into the wild blue yonder"

Taiwanese-American nuclear physicist

U.S. Dept. of Energy clearance level

American scientist imprisoned for attempted espionage