威廉姆·德瓦内
William Devane
饰：President John F. Kennedy
拉尔夫·贝拉米
Ralph Bellamy
饰：U.N. Ambassador Adlai Stevenson
霍华德·达·席尔瓦
Howard Da Silva
饰：Soviet Premier Nikita Khrushchev
吴汉章
James Hong
饰：U.N. Secretary-General U Thant
马丁·辛
Martin Sheen
饰：Att. Gen. Robert F. Kennedy
詹姆斯·T·卡伦汉
James T. Callahan
饰：David Powers, Special Assistant to the President
Peter Canon
饰：Admiral's Aide
Keene Curtis
饰：John McCone, Director CIA
Charles Cyphers
饰：Press Photographer
克利福德·戴维
Clifford David
饰：Theodore Sorensen, Special Counsel
约翰·德那
John Dehner
饰：Former Secretary of State Dean Acheson
弗朗西斯·德塞尔斯
Francis De Sales
饰：Senator
彼得·多纳特
Peter Donat
饰：David Ormsby-Gore, British Ambassador to U.S.
安德鲁·杜甘
Andrew Duggan
饰：Gen. Maxwell Taylor, Army Chief of Staff
Richard Eastham
饰：Gen. David M. Shoup, USMC Commandant
达纳·艾卡
Dana Elcar
饰：Secretary of Defense Robert McNamara
Gene Elman
饰：Russian Presidium Member
Ron Feinberg
饰：Gen. Charles De Gaulle
阿瑟·弗兰兹
Arthur Franz
饰：Congressman Charles A. Halleck
拉里·盖茨
Larry Gates
饰：Secretary of State Dean Rusk
Jerome Guardino
Jerome Guardino
饰：Reporter
Ted Hartley
饰：American General
Bern Hoffman
饰：Russian Presidium Member
Richard Karlan
饰：Chief of the Presidium
Stacy Keach Sr.
饰：W.E. Knox, President Westinghouse International
赖特·金
Wright King
饰：Sen. Richard Russell
Will Kuluva
饰：Valerian Zorin
Paul Lambert
饰：John Scali, ABC Correspondent
多琳郎
Doreen Lang
饰：Mrs. Evelyn Lincoln, President Kennedy's Secretary
迈克尔·勒纳
Michael Lerner
饰：Pierre Salinger, Whitehouse Press Secretary
Robert P. Lieb
饰：Gen. Curtis LeMay, Air Force Chief of Staff
John McMurtry
饰：Yefgani Yeftashanko
拜伦·莫罗
Byron Morrow
饰：Sen. William Fullbright
Stewart Moss
饰：Kenneth O'Donnell, Special Assistant to the President
斯图尔特·尼斯贝特
Stuart Nisbet
饰：Reporter
Buddy Ochoa
Buddy Ochoa
饰：Television Assistant
詹姆斯·奥尔森
James Olson
饰：McGeorge Bundy, Special Assistant for National Security Affairs
丹尼斯·帕特里克
Dennis Patrick
饰：Llewellyn Thompson, Former U.S. Ambassador to the Soviet Union
Albert Paulsen
饰：Ambassador Anatoly Dobrynin
内赫米亚·佩尔索夫
Nehemiah Persoff
饰：Foreign Minister Andrei Gromyko
威廉·普林斯
William Prince
饰：Secretary of the Treasury, C. Douglas Dillon
约翰·兰道夫
John Randolph
饰：Undersecretary of State George Ball
Toby Russ
饰：Waiter
肯尼斯·托比
Kenneth Tobey
饰：Adm. George W. Anderson Jr., Chief of Naval Operations
Serge Tschernisch
Serge Tschernisch
饰：Soviet Stenographer
Jay Vallera
Jay Vallera
饰：Cuban Delegate
乔治·维内尔
George Wyner
饰：Civillian Aide
哈里斯·于林
Harris Yulin
饰：KGB Agent Alexander Fomin
塞耶·戴维
Thayer David
饰：Narrator (uncredited)
Michael Fox
饰：Soviet Marshal