<prompt> Nyorera kupfuurira kweiyi ndima - Pakutanga, chiKomonisiti North Vietnam yaive mubatsiri akasimba weKhmer Rouge apo yaive ichirwisana neLon Nols Khmer Republic panguva yehondo yevagari vemo ya1970-1975. Chete pashure pokunge vaKhmer Rouge vatora simba zvinhu zvakatanga kuva zvinotyisa, apo musi wa1 May 1975 zuva rakatevera kuwa kweSaigon  <response>: , varwi veKhmer Rouge vakapinda muzvitsuwa zvePhu Quoc neTho Chau, vakauraya vanhu vechiVietnam vanopfuura mazana mashanu; zvichitevera kurwisa uku, zvitsuwa izvi zvakakurumidza kutorwazve neHanoi. Kunyange ipapo, kuita kwokutanga kwavaVietnam kwakanga kusina kujeka, uye kwakatora Vietnam nguva refu kuti iite chiito nesimba, nokuti kurudziro yokutanga yakanga iri yokuronga zvinhu mumba memhuri. 