(in credits order)
- Lien-Hang Nguyen(as Lien-Hang T. Nguyen)
- Frank G. Wisner II(as Frank G. Wisner)
- Peter Osnos(as Peter L.W. Osnos)
- Gregory Daddis(as Col. Gregory A. Daddis)
- Duc Nha Hoang(as Hoang Duc Nha)
- Le Ly Hayslip(as Phung Thi Le Ly Hayslip)
- Patrick Paterson(as CDR. Patrick Paterson)
Rest of cast listed alphabetically
- Muhammad Ali(archive footage)
- Donald Braman(archive footage) (as SP4 Donald Braman)
- McGeorge Bundy(archive footage)
- Fidel Castro(archive footage)
- Walter Cronkite(archive footage)
- William Deal(archive footage) (as Sgt. William Deal)
- Ngo Dinh Diem(archive footage)
- Kenneth Good(archive footage) (as Capt. Kenneth Good)
- Paul D. Harkins(archive footage) (as Ben. Paul D. Harkins)
- Nikita Khrushchev(archive footage)
- Henry Cabot Lodge Jr.(archive footage) (voice)
- Zedong Mao(archive footage)
- Robert McNamara(archive footage)
- Ho Chí Minh(archive footage)
- Dinh Nhu Ngo(archive footage) (as Ngo Dinh Nhu)
- Madame Nhu(archive footage) (as Tran Le Xuan)
- Duc Quang(archive footage) (as Thich Quang Duc)
- Dean Rusk(archive footage)
- Mike Wallace(archive footage)
