Despite the distinguished cast's superb impersonations of Vietnam–era figures, this dour docudrama is undermined by a curiously remote quality. Campaigning on a peace platform, Democrat Lyndon Baines Johnson (Michael Gambon), former-Vice President to the assassinated John Fitzgerald Kennedy, defeats Republican senator Barry Goldwater in the 1964 presidential election and enjoys the fruits of victory at his inaugural ball on January 20, 1965. LBJ takes office with high hopes, promoting civil rights and the war on poverty. But an unresolved international issue is already distracting his attention from campaign promises: What will become the quagmire of Vietnam. Pentago...