Antony 'Tony' Lambton, Viscount Lambton, MP, London: world affairs; Roy Welensky's discussion with J.F. Kennedy, President of the United States; briefing on Rhodesian (Zimbabwean) politics, the position of Field, support, splits, and the eclipse of Whitehead; hope for the Conservatives to become conservative again once out of office; (missed) opportunities for a settlement (1966-1969), Jan 1964-Jun 1970