Helen Caldicott

饰：Herself (as Dr. Helen Caldicott)

Vannevar Bush

Vannevar Bush

饰：Himself - In front of map of Japan (archive footage)

Leslie Groves

Leslie Groves

饰：Himself - In front of map of Japan (archive footage)

Richard Tolman

Richard Tolman

饰：Himself - In front of map of Japan (archive footage)

哈里·S·杜鲁门

Harry S. Truman

饰：Himself (archive footage)

克莱门特·理查德·艾德礼

Clement Attlee

饰：Himself, at Potsdam (archive footage) (uncredited)

Ernest Bevin

Ernest Bevin

饰：Himself, at Potsdam (archive footage) (uncredited)

James F. Byrnes

James F. Byrnes

饰：Himself, at Potsdam (archive footage) (uncredited)

艾德·赫利希

Ed Herlihy

饰：Universal Newsreel Narrator (uncredited) (archive footag

Ernest O. Lawrence

Ernest O. Lawrence

饰：Himself - with Cyclotron Controls (archive footage) (uncredited)

威廉·丹尼尔·莱希

William D. Leahy

饰：Himself, at Potsdam (archive footage) (uncredited)

维亚切斯拉夫·莫洛托夫

Vyacheslav Molotov

饰：Himself, at Potsdam (archive footage) (uncredited)

约瑟夫·维萨里奥诺维奇·斯大林

Иосиф Виссарионович Сталин

饰：Himself, at Potsdam (archive footage) (uncredited)

富兰克林·德拉诺·罗斯福

Franklin D. Roosevelt

饰：Self,(archive footage)

温斯顿·伦纳德·斯宾塞·丘吉尔

Winston Churchill

饰：Self,(archive footage)

罗纳德·威尔逊·里根

Ronald Wilson Reagan

饰：Self,(archive footage)