Duk da haka, Lon Nol ya taimaka wa Firayim Minista na Arewacin Vietnam da ofisoshin jakadancin Viet Cong. A cikin rashi na yarima, Lon Nol bai yi komai ba don dakatar da waɗannan ayyukan. A ranar 12 ga Maris, Firayim Minista ya rufe tashar jiragen ruwa na Sihanoukville ga Arewacin Vietnam kuma ya ba da wata hujja mai wuya a gare su. Duk sojojin PAVN / Viet Cong sun janye daga ƙasar Kambodiya a cikin sa'o'i 72 (a ranar 15 ga Maris) ko kuma fuskantar aikin soja. Sihanouk, da jin labarin tashin hankali, ya nufi Moscow da Beijing don neman magoya bayan PAVN da Viet Cong su kara iko a kan su.
Sihanouk