In 1958, Bửu Hội resumed work for Diệm on the international front. He was charged with attending to the Indian, Canadian and Polish diplomats from the International Control Commission that were charged with monitoring the Geneva Accords which partitioned Vietnam in 1954. He was also assigned the job of securing diplomatic links and greater recognition of the Republic of Vietnam on the international arena. He was named as South Vietnam's ambassador to various countries and several bodies of the United Nations. In addition, he was named as the director of the Vietnam Atomic Energy Center that was constructed near the central highlands resort town of Đà Lạt. It was to be South Vietnam's first nuclear reactor.[17]
