<prompt> Nyorai kupfuurira kweiyi ndima - Kubhomba hakuna kuganhurirwa kuNorth Vietnam. Dzimwe nhimbe dzomumhepo, dzakadai seOperation Barrel Roll, dzakanangana nezvikamu zvakasiyana zveViet Cong nePAVN. Iyi yaibatanidza nzira yokupa zvokudya yeHo Chi Minh, iyo yaipfuura nomuLaos neCambodia. Laos yairatidzika kuva isina kwayakarerekera yakanga yava nzvimbo yehondo yavagari vemo  <response>: , ichirwisana nehurumende yeLaotian inotsigirwa neU.S. ichirwisana nePathet Lao nehama dzayo dzokuNorth Vietnam. 