Aiken’s first step was a modest paragraph calling for the formation of a UN commission to recommend measures to the next session. However, global attentions were focused on nuclear tests and their health effects, so Aiken linked his initiative with the American-led seventeen-power resolution requesting all states to suspend testing voluntarily. Aiken proposed an amendment to that motion that included the notion of brokering an understanding between nuclear weapons powers and non-nuclear powers.  He submitted that the former voluntarily desist from supplying nuclear weapons to other countries, while non-nuclear powers reciprocated and volunteered not to develop such weapons during a test suspension. This proposed quid pro quo became a staple in the Irish resolutions subsequently and eventually be inscribed into the NPT.

Aiken’s speech invoked recognizable tropes such as a ‘geometric’ increase in nuclear powers, creating an urgent need to halt the spread. His speech was seminal in identifying themes he and international opinion would rehearse in future years. He conjured up fears about small states and revolutionary groups with a bomb acting as ‘the detonator for world-wide thermonuclear war’. Aiken was perceptive – he expected criticisms about institutionalized equality between states (nuclear “haves” and “have nots”), harms to alliances, the sufficiency of test bans, and the absence of monitoring. He sought to disprove the validity of such critiques, and these issues were worked through gradually, eventually leading to the finalization of the NPT ten years later.  

Aiken made an immediate impression on his arrival in the Twelfth Session of the UN General Assembly in September 1957. He adopted an impartial posture of assessing each issue on its merits and campaigning to remodel international politics around self-determination, humanitarianism, and peace. His exhortation was that only the UN had the moral authority and political legitimacy to put forward global solutions. While he did not propose nuclear disarmament measures specifically, his intent was signaled by his recommendation for a mutual drawback of foreign forces (including their nuclear weapons) in central Europe and his endorsement of a proposal to discuss the representation of China in the United Nations. The Eisenhower administration was hostile to Aiken’s course as outlined in the U.S. ambassador’s audience with Taoiseach Eamon de Valera and Aiken in Dublin on 2 October. The record underlines the Irish concerns about accidental nuclear war due to the proximity of opposing U.S. and Soviet forces in central Europe.