Rubuta ci gaba don wannan sakin layi - A cikin 1977, yayin tsaftace-tsabtace na cikin gida na mulkin Khmer Rouge, Hun Sen da ma'aikatan rundunarsa sun gudu zuwa Vietnam. A lokacin Kambodiyanci-Vietnam War
Yayin da Vietnam ke shirin mamaye Cambodia, Hun Sen ya zama daya daga cikin shugabannin sojojin 'yan tawaye da Vietnam ta tallafawa. Bayan cin nasarar mulkin Khmer Rouge, an nada Hun Sen a matsayin Mataimakin Firayim Minista da Ministan Harkokin Waje na Vietnam da aka sanya &lt;a href="People%27s%20Republic%20of%20Kampuchea"&gt;Jamhuriyar Jama'ar Kampuchea/State of Cambodia&lt;/a&gt; (PRK/SOC) a 1979 yana da shekaru 26. Gwamnatin da Vietnam ta nada ta nada Sen wani iko a kan Shirin K5, dabarun dakile Khmer Rouge wanda ya ga yawan aikin farar hula a gina shinge da ma'adinan ƙasa, kodayake ba a san girman sa ba.