Bayan mamayar da Vietnam ta yi wa Cambodia a shekarar 1978 da kuma rugujewar jam'iyyar Democratic Kampuchea a shekara ta 1979, Khmer Rouge ya gudu zuwa yankunan kan iyaka na Thailand, kuma tare da taimakon kasar Sin, sojojin Pol Pot sun yi nasarar tattarawa tare da sake tsarawa a yankunan dazuzzuka da tsaunuka na kasar Thailand. - iyakar Kambodiya.A cikin shekarun 1980s da farkon 1990 sojojin Khmer Rouge sun gudanar da aiki daga cikin sansanonin 'yan gudun hijira a Thailand, a wani yunƙuri na kwance damarar gwamnatin Kampuchea mai goyon bayan Hanoi, wadda Thailand ta ƙi amincewa da ita.Thailand da Vietnam sun fuskanci tsallaka kan iyakar Thailand da Cambodia tare da kutsawa cikin Vietnam da kuma kai hare-hare a cikin yankin Thai a cikin shekarun 1980 don bin 'yan tawayen Cambodia wadanda suka ci gaba da kai hari kan sojojin mamaya na Vietnam.