Laking was based in Washington as
Ambassador to the United States from 1961 to 1967. This was considered to be the most important of New Zealand's foreign postings, due to the prominence of the United States, and the shift of allegiance away from the United Kingdom towards the US. During this time, the key themes were the assassination of President
John Fitzgerald Kennedy, and under President
Lyndon B. Johnson, the tumultuous years of escalation of US involvement in
Vietnam. Laking supported New Zealand involvement in Vietnam, and was under pressure from the US Government for New Zealand to send combat troops to the conflict. McIntosh was less supportive of the idea, but Defence Chiefs in Wellington, with the notable exception of Defence Secretary
Jack Hunn, and politicians unwilling to offend US interests, supported the move. == Secretary of Foreign Affairs ==