In June 1969, he extended diplomatic recognition to the Provisional Revolutionary Government of the Republic of South Vietnam (PRGSV), hoping that he could get the Viet Cong troops under its charge to leave Cambodia should they win the war.
Pada Juni 1969, ia menyatakan pengakuan diplomatik kepada Pemerintah Revolusioner Provisional Republik Vietnam Selatan (PRPRVS), dengan harapan agar ia dapat membuat pasukan Viet Cong meninggalkan Kamboja saat mereka memenangkan perang.