Masarautar Ayutthaya karkashin jagorancin Yariman Thailand kuma sarkin yaki Naresuan sun kai wa Cambodia hari a shekara ta 1583. ^[59] Yakin ya fara ne a shekara ta 1591 lokacin da Ayutthaya ya mamaye Cambodia a matsayin martani ga hare-haren Khmer na ci gaba da kai wa yankinsu.Masarautar Cambodia kuma tana fuskantar sabani na addini a cikin kasar.Wannan ya baiwa Siamese cikakkiyar dama ta mamayewa.An kama Longvek a shekara ta 1594 wanda ya zama farkon kafa gwamnan sojan Siamese a birnin.A karon farko an kafa wani mataki na kula da harkokin siyasa na kasashen waje a kan masarautar yayin da aka rage kujerar mulki zuwa na vassal.^[60] Bayan kama Siam a babban birnin kasar a Longvek, an yi garkuwa da 'yan gidan sarautar Cambodia kuma aka koma da su a kotun Ayutthaya, an kiyaye su a ƙarƙashin tasirin Thai na dindindin kuma an bar su don sasantawa da yin gasa da juna a ƙarƙashin binciken mai mulki.^[61]