Mushure mokunge mauto eU.S. asvika muCambodia muna 1966, Mutungamiri Lyndon B. Johnson akasarudza kusarwisa mauto eU.S. nePAVN/Viet Cong muCambodia kubvira muna 1966, nekuda kwemigumisiro yenyika uye nekutenda kwake kuti Sihanouk aigona kugutsikana kuti achinje mitemo yake. Zvisinei, Johnson akabvumira mapoka ekuongorora eU.S. Military Assistance Command, Vietnam Studies and Observations Group (SOG) kuti apinde muCambodia uye kuunganidza ruzivo pamusoro peBase Areas muna 1967. Kusarudzwa kwaRichard M. Nixon muna 1968 uye kuiswa kwemitemo yake yekubva zvishoma nezvishoma kweU.S. kubva kuSouth Vietnam uye kurwisana kweVietnam ikoko, zvose zvakachinja. Mubvunzo: Nixon akasarudzwa rini?
Muna 1968