Nyorai kupfuurira kweiyi ndima - Muna 1977, mukati mekuchenesa kwemukati kwehurumende yeKhmer Rouge, Hun Sen nevakuru vebato rake vakatizira kuVietnam. Munguva yeHondo yeCambodian-Vietnamese
Sezvo Vietnam yakanga ichigadzirira kupinda muCambodia, Hun Sen akava mumwe wavatungamiriri vehondo yevapanduki yaitsigirwa neVietnam. Mushure mekukundwa kwehutongi hweKhmer Rouge, Hun Sen akagadzwa seMutevedzeri weMutungamiriri weHurumende uye Gurukota rezvekunze kweVietnamese-yakaiswa &lt;a href="People%27s%20Republic%20of%20Kampuchea"&gt;People's Republic of Kampuchea/State of Cambodia&lt;/a&gt; (PRK/SOC) muna 1979 aine makore makumi maviri nematanhatu. Hurumende yakagadzwa neVietnam yakapa Sen masimba pamusoro peK5 Plan, chirongwa cheKhmer Rouge chekudzivirira chakaona kuunganidzwa kukuru kwevashandi vehurumende mukuvaka zvipingamupinyi uye zvimbambaira, kunyange hazvo huwandu hwekubatanidzwa kwake husina kujeka.