UK Ambassador to South Africa Sir David Scott conveys the text of a letter he sent to South African Defense Minister P. W. Botha about UK concern that South Africa is developing a nuclear weapon.

Reid of the UK's Central and Southern African Department describes a recent visit to Pretoria, South Africa, during which he heard supposedly non-nuclear explosions taking place at the Kalahari Desert facility.

J .E. Holmes, at the UK Embassy in Moscow, reports on Soviet news coverage of the South African nuclear controversy.

H.M.S. Reid writes a draft letter to South African concerning the possibility that South African would perform non-nuclear test explosions at the site in the Kalahari Desert.

UK Embassy in Pretoria reports on South African President Vorster’s remarks on nuclear matters to ABC television.

Mallaby addresses Sir David Scott's 6 October letter concerning the possible South African nuclear test site in the Kalahari desert.

Mallaby summaries actions taken in response to accusations that South Africa is preparing to test a nuclear device.

H.M.S. Reid sends instructions to the UK Embassy in Pretoria in preparation for a meeting with South African Secretary for Foreign Affairs Brand Fourie. Reid informs them that the Prime Minister wishes to send his concerns about the possibility of South Africa exploding a nuclear device.

The UK Embassy in Vienna reports on the South African statement to the International Atomic Energy Agency General Conference denying Soviet accusations that the country was developing nuclear weapons.

In response to Mallaby's letter, Reid dismisses the American explanation for the South African Kalahari nuclear testing facility. He believes that the South Africans "feel increasingly threatened and foresee a possible need to use nuclear weapons in their own defence if it should come to that."