Noting some inaccuracy in the Canadian Defence Research Board report---Argentina could not have offered to sell its “entire production” of uranium if it was also selling concentrate to Germany and trying to sell it to Japan—Goodison, of the Foreign Office's Eastern Department, asked Audland, a political officer at the British Embassy in Buenos Aires, to “keep your ears to the ground” to find the “exact quantities” involved.

Christopher Audland, a political officer at the British Embassy in Buenos Aires, learned from the Canadian Charge d'Affaires that the information on the Argentine-Israel uranium deal "did not originate in Buenos Aires," and that the Argentine National Atomic Energy Commission had made previous uranium sales to West Germany and to Israel in 1962. Minutes are attached.

In a letter to Arthur Kellas, counselor at the British Embassy in Tel Aviv, Alan Goodison of the Foreign Office's Eastern Department disclosed the Argentine-Israel uranium deal, which involved the transfer of 80-100 tons over 33 months. Since evidence suggested that Israel had facilities for plutonium separation, they estimated that there would be enough plutonium for a weapon within 20 months; however, Goodison had no proof that the Israelis planned to produce a nuclear weapon, only that they had the capability to do so. Minutes are attached.

This letter describes a meeting between Peter Ramsbotham, chief of the chancery at the British Embassy in France, and George Soutou, a senior official at the French Foreign Ministry. Soutou acknowledged that the French believed that the Israelis were attempting to "put themselves in a position to make a nuclear bomb if they wanted to." The French-Israeli agreement did not include a condition that prevented the use of non-French uranium for Dimona, and Ramsbotham wondered whether the French should be told about the Argentine-Israeli secret deal. Minutes of a conversation with Arkell of the Defense Intelligence Staff are attached.

After analyzing photographs taken of the Israeli nuclear facility at Dimona, J. Koop, a career intelligence analyst at Canada's Defence Research Board, concluded in March 1964 that Dimona had all of the "prerequisites for commencing a modest nuclear weapons development project." When the Dimona reactor went critical, it could produce enough plutonium for at least one implosion device by the end of 1965 and increase its operating level to produce one to two per year by 1966. Arthur Kellas, a British diplomat in Israel, wrote in his forwarding letter that they were highly impressed by the analysis.