Pedzisa mutsara unotevera: Pasi paPurezidhendi John F. Kennedy, nhamba yemasoja eU.S. muVietnam yakakura mupurogiramu yeBoka Rokubatsira Kwechiuto reMasoja kubva pavasingasviki chiuru muna 1959 kusvika ku16 000 muna 1963. Mutungamiri weSouth Vietnamese Ngo Dinh Diem ane ruoko rwakaoma
kudzvinyirira mamongi echiBuddha muna 1963 kwakaita kuti US itsigire kudengenyeka kwechiuto kunouraya kuna Diem. Hondo yakawedzera zvikuru muna 1964 pashure pechiitiko chakakanganiswa cheGulf of Tonkin, umo muparadzi weU.S. akanzi akarwisana nengarava dzokurwa dzinokurumidza dzeNorth Vietnam. Chibvumirano cheGulf of Tonkin chakapa Mutungamiri Lyndon B. Johnson chiremera chakakura chokuwedzera kuvapo kwechiuto cheU.S., kutumira mauto okurwisa pasi kwenguva yokutanga nokuwedzera uwandu hwevarwi kusvika ku184 000. Mutungamiri weSoviet Leonid Brezhnev akapindura kupfurikidza nokudzorera mutemo waKhrushchev wokusabatanidzwa uye kuwedzera betsero kuNorth Vietnamese, achikarira kunyengedza North kubva panzvimbo yayo inotsigira China. Zvisinei, USSR yakavhiringidza kumwe kuwedzera kwehondo, ichigovera betsero yechiuto yakakwana yokubatanidza mauto eAmerica. Kubva panguva iyi, People's Army of Vietnam (PAVN), inozivikanwawo seNorth Vietnamese Army (NVA) yakaita hondo yakajairika nemauto eU.S. neSouth Vietnam.