Boland gauged opinion at the UN and assisted in preparing the ground for Aiken’s campaign in the XIVth Session in the fall of 1959. Ireland cultivated the UN Secretariat, notably Dr. Protitch, who evaluated the Irish proposal as helpful. Likewise, intimations from the Eastern bloc were positive. The Irish Permanent Representative consolidated links with the second-in-command of the U.S. mission to the UN, James W. Barco, to enable a constructive dialogue with the Americans to fashion a resolution they could tolerate

Nonproliferation talks entered their decisive phase after the submission of a joint U.S.-Soviet draft to the ENDC on February 21, 1967. One week later, High-Commissioner of the French Commissariat à l’énergie atomique, Francis Perrin, assessed France’s options. It was not “by accident,” he noted, the original five UN Security Council permanent members—the United States, the United Kingdom, France, the Soviet Union, and China—were in line for nuclear-club membership: “…they are the same profound reasons, of a geographical, demographic or other nature, which led to the choice [in 1945] … of the countries with special responsibilities in the maintenance of world peace.” After noting how advances in “India, Israel, Japan, Sweden, and also West Germany” portended the further spread of nuclear weapons—and acknowledging France had itself sought help with its weapon program—Perrin pondered whether proliferation might hasten nuclear disarmament by convincing the superpowers of its merits. In the end, however, fear of a “large and hostile” nuclear-armed PRC made him pessimistic. While he did not advise signing the NPT, it would be “very important” for France to affirm publicly, if unilaterally, “its constant policy since 1958 … not to cede any atomic weapon or any atomic explosive device to a country which does not possess it, and not to help any such country to manufacture them.” He dismissed internal opposition toward the NPT as defensive—"an a posteriori justification of the French decision to constitute an atomic armament." More significant was the likelihood West Germany would gain its own atomic arsenal, jeopardizing France’s “dominant political position among the Europe of the Six” members of the European Communities and reviving Cold War tensions in Europe. He finished with an eye-opening analysis of how the Kosygin proposal for nuclear-weapon states to extend negative security guarantees to non-nuclear-weapon states’ signatory to the NPT would not impede the use of French nuclear armaments against a West German blitzkrieg backed by the United States.

Responding to a request from Michael Palliser (Wilson's Private Secretary for foreign affairs), the Foreign Office's seasoned Europe-watcher Derek Day argued that the government needed to balance three – sometimes conflicting – UK interests. First, there was the position as a European power, particularly with regard to the ongoing EEC application. Second, there was the UK's status as a nuclear power, in which the UK shared “special responsibilities” with the US, exemplified by the UK's acquisition of Polaris submarine-launched ballistic missiles as its primary nuclear deterrent. Third, there was the desire to see a non-proliferation treaty concluded, which sometimes meant disagreement with both the United States and the Soviet Union. Day contended that the United Kingdom seemed to have been successful in positioning itself as understanding European anxieties, with Bonn having congratulated Wilson's administration on bring “good Europeans.” Day's assessment was seen and lauded by Wilson, who hoped that it was correct.

Two "Notes for the Record" from March 1, 1967, describe the vigorous discussions between senior UK government figures, including Harold Wilson, Foreign Secretary George Brown, Minister of State for Foreign and Commonwealth Affairs Lord Chalfont, and chief scientific adviser to the government Solly Zuckerman. Brown argued that "our posture on the matter should be distinctively European rather than one of supporting the United States against other European countries." Wilson was even more explicit, stating that "our approach should be that of a European power discussing the matter with European partners and not seeking to fight American battles." Wilson was keen to let Washington take the lead so that his government might avoid upsetting the French, as had happened with the debates over De Gaulle's 1966 withdrawal from the NATO command structure.

Two "Notes for the Record" from March 1, 1967, describe the vigorous discussions between senior UK government figures, including Harold Wilson, Foreign Secretary George Brown, Minister of State for Foreign and Commonwealth Affairs Lord Chalfont, and chief scientific adviser to the government Solly Zuckerman. Brown argued that "our posture on the matter should be distinctively European rather than one of supporting the United States against other European countries." Wilson was even more explicit, stating that "our approach should be that of a European power discussing the matter with European partners and not seeking to fight American battles." Wilson was keen to let Washington take the lead so that his government might avoid upsetting the French, as had happened with the debates over De Gaulle's 1966 withdrawal from the NATO command structure.

This memo to the Council of Ministers from the Euratom Commission examines the Russian draft of Article III of the NPT. It draws attention to the gradual convergence of Russian and American positions on the control clauses of the Treaty.

This memo to the Euratom Commission detailed the reaction of the Council of Minister on the problems in the proposed non-proliferation treaty.

Checklist of topics covered in discussions between the United States and the Soviet Union on Article III of the Nonproliferation Treaty.

This project served as a response to questions asked by the Committee of Permanent Representatives to the Council. It discusses the compatibility of the NPT project and the Euratom Treaty as well as modifications.

Lord Chalfont described the international agreement on non-dissemination of nuclear weapons as a new phase in negotiations on disarmament.