A watan Maris na shekara ta 1945, Japan ta kawar da mulkin Faransa a dukan Indochina, har da Laos. A ranar 8 ga Afrilu 1945 Sarki Sisavang Vong ya ayyana "a ƙarƙashin matsin lamba na Jafananci kuma a kan roƙon Phetsarath" cewa masarautarsa ba ta zama mai kare Faransa ba. Ba da daɗewa ba bayan haka, a ranar 28 ga Agusta, 1945,
Kasar Japan ta mika wuya.