Characters played by William Devane
John F. Kennedy - US President
Characters played by Ralph Bellamy
Adlai Stevenson - US Ambassador to UN
Characters played by Howard Da Silva
Nikita Khrushchev - Soviet Premier
Characters played by James Hong
U Thant - U.N. Secretary-General
Characters played by Martin Sheen
Atty. Gen. Robert F. Kennedy
Characters played by James T. Callahan
David Powers - Special Assistant to the President
Characters played by Peter Canon
Admiral's Aide
Characters played by Keene Curtis
John McCone - Director CIA
Characters played by Charles Cyphers
Press Photographer
Characters played by Clifford David
Theodore Sorensen - Special Counsel
Characters played by Francis De Sales
Senator
Characters played by John Dehner
Dean Acheson - Former Secretary of State
Characters played by Peter Donat
David Ormsby-Gore - British Ambassador to U.S.
Characters played by Andrew Duggan
Gen. Maxwell Taylor - Army Chief of Staff
Characters played by Richard Eastham
Gen. David M. Shoup - USMC Commandant
Characters played by Dana Elcar
Robert McNamara - Secretary of Defense
Characters played by Eugene Elman
Russian Presidium Member
Characters played by Ron Feinberg
Gen. Charles De Gaulle
Characters played by Michael Fox
Soviet Marshal
Characters played by Arthur Franz
Congressman Charles A. Halleck
Characters played by Larry Gates
Dean Rusk - Secretary of State
Characters played by Jerome Guardino
Reporter
Characters played by Ted Hartley
American General
Characters played by Bern Hoffman
Russian Presidium Member
Characters played by Richard Karlan
Chief of the Presidium
Characters played by Stacy Keach Sr.
W.E. Knox - President
Westinghouse International
Characters played by Wright King
Sen. Richard Russell
Characters played by Will Kuluva
Valerian Zorin
Characters played by Paul Lambert
John Scali - ABC Correspondent
Characters played by Doreen Lang
Mrs. Evelyn Lincoln - President Kennedy's Secretary
Characters played by Michael Lerner
Pierre Salinger - White House Press Secretary
Characters played by Robert P. Lieb
Gen. Curtis LeMay
- Air Force Chief of Staff
Characters played by John McMurtry
Yefgani Yeftashanko
Characters played by Byron Morrow
Sen. J. William Fulbright
Characters played by Stewart Moss
Kenneth O'Donnell - Special Assistant to the President
Characters played by Stuart Nisbet
Reporter
Characters played by Buddy Ochoa
Television Assistant
Characters played by James Olson
McGeorge Bundy - Special Assistant for National Security Affairs
Characters played by Dennis Patrick
Llewellyn Thompson - Former U.S. Ambassador to the Soviet Union
Characters played by Albert Paulsen
Ambassador Anatoly Dobrynin
Characters played by Nehemiah Persoff
Andrei Gromyko - Soviet Foreign Minister
Characters played by William Prince
C. Douglas Dillon - Secretary of the Treasury
Characters played by John Randolph
George Ball - Undersecretary of State
Characters played by Toby Russ
Waiter
Characters played by Kenneth Tobey
Adm. George W. Anderson Jr. - Chief of Naval Operations
Characters played by Serge Tschernisch
Soviet Stenographer
Characters played by Jay Varela
Cuban Delegate
Characters played by George Wyner
Civillian Aide
Characters played by Harris Yulin
Alexander Fomin - KGB Agent
Characters played by Thayer David
Narrator