| Actor | Michael Gambon (as Lyndon Johnson), Donald Sutherland (as Clark Clifford), Alec Baldwin (as Robert McNamara, Secretary of Defense), Bruce McGill (as George Ball, Undersecretary of State), James Frain (as Richard Goodwin), Frederic Forrest (as General Earle G. Wheeler), John Aylward (as Dean Rusk, Secretary of State), Philip Baker Hall (as Everett Dirksen), Tom Skerritt (as General William Westmoreland), Gerry Becker (as Walt Rostow), Peter Jacobson (as Adam Yarmolinsky), Cliff De Young (as McGeorge Bundy, National Security Advisor (as Cliff DeYoung)) |