[2] From 1965 to 1967, Moore was the Canadian Commissioner of the International Control Commission, during the Vietnam War.
[3][4] Moore negotiated directly with the Communist government in Hanoi in an attempt to reconvene the 1954 Geneva Conference.
[5] Unfortunately, the effort championed by Moore and Chester Ronning was unsuccessful.
[6] In 1968 Moore was appointed High Commissioner to Jamaica, a post he held until 1972.
[1] In 1976 and 1977 Moore succeeded Arthur Frederick Broadbridge as High Commissioner to Malawi and Zambia and Ambassador Extraordinary and Plenipotentiary to Mozambique, posts he held until 1979.