November 5, 2026
Siegfried S. Hecker
Center for Nonproliferation Studies at Monterey, Middlebury College
Director emeritus, Los Alamos National Laboratory
Professor emeritus, Stanford University
Essay based on a presentation at the “Atoms for Peace after Seven Decades” Workshop
at the Wilson Center, Washington DC on December 8, 2023.
Organized by the Wilson Center and the Los Alamos National Laboratory.
In early afternoon of 8 December 1953, Dwight D. Eisenhower asked the pilot of the president’s plane bringing him back from a summit in Bermuda to circle above New York City numerous times so he could put the finishing touches on his speech at the United Nations.[1] With one of the most memorable and consequential presidential speeches during my lifetime, President Eisenhower dramatically changed the nuclear landscape by launching the Atoms for Peace initiative.
The Atoms for Peace Vision
Eisenhower wrote in his diary two days after the speech that he was inspired by “the clear conviction that the world was racing toward catastrophe,” and that he had to act. As much as the speech was aimed at controlling the arms race with the Soviet Union and preventing potential proliferation of nuclear weapons to other countries, it was his desire to address the dual nature of the atom that opened the way for the peaceful uses of the atom for generating electricity, as well as for medicine, agriculture and industry. He wanted the initiative to offer the world hope and underscore the United States’ sincere desire to find a just peace.[2]
Several phrases from his speech have continued to resonate in my head: “To hasten the day when fear of the atom will begin to disappear from the minds of the people and the governments of the East and West…” And his conclusion that to the making of these fateful decisions, “the United States pledges before you, and therefore before the world, its determination to help solve the fearful atomic dilemma—to devote its entire heart and mind to finding the way by which the miraculous inventiveness of man shall not be dedicated to his death, but consecrated to his life.”[3]
These ideas have guided much of my work in the nuclear world since I first set foot in the Los Alamos Scientific Laboratory (as it was called then) as a summer student in 1965. I came to Los Alamos because it was one of the greatest scientific laboratories in the world. I hadn’t thought much about its nuclear weapons mission. Norris Bradbury, Robert Oppenheimer successor as director of the laboratory, welcomed the new employees and summer interns in the main auditorium with the message, “At Los Alamos, we don’t build nuclear weapons to kill people, but to buy time for our leaders to find other ways of settling our differences.” I believe that today, as seventy years ago, we must strive to derive the benefits of the enormous energy liberated when splitting or fusing nuclei while managing the risks of doing so.
The vision of Atoms for Peace was largely Eisenhower’s own. The speech reflected how thoroughly he believed in the dual nature of the atom and that it was crucial to have international collaboration to solve the “fearful atomic dilemma.” He proposed that “the governments principally involved … should begin now and continue to make joint contributions from their stockpiles of normal uranium and fissionable materials to an international atomic energy agency. We would expect that such an agency would be set up under the aegis of the United Nations.” Eisenhower put his personal imprint on the speech reflecting his vision with last-minute edits as he was circling above New York City. His edits are shown in pencil in the declassified version of the typed speech available in the Eisenhower Library.[4]
Eisenhower’s speech presented a vision, not a blueprint.[5] Eisenhower had kept the ideas close hold to a few of his key advisors before the speech. It presented aspirations with little consideration to its practical outcomes and had not yet put any policy in place.[6] It would take on many different forms as it was implemented by the various branches of the U.S. government and promoted globally. Consequentially, it would lead to the establishment of the International Atomic Energy Agency (IAEA) in 1957. It also prepared the way for the Nuclear Nonproliferation Treaty (NPT) in 1968, which entered into force in 1970. As I assess the reality and legacy of the Atoms for Peace speech it is in the spirit of how it altered the nuclear landscape to promote the benefits of atomic energy while controlling the risks.
The Reality
From my perspective based on nearly sixty years in the nuclear world, the Atoms for Peace initiative has been remarkably successful. Eisenhower’s aspirations have fundamentally shaped the nuclear world we live in today. The programs it created and the international cooperation it fostered led to the establishment of a Global Nuclear Order. The reality today, more than 70 years after Eisenhower’s speech and eight decades after Hiroshima and Nagasaki, is that no nuclear weapons have been used in war; fewer than 10 states possess nuclear weapons; there has not been a single incident of nuclear terrorism; and the world has benefited from clean nuclear electricity, nuclear medicine, nuclear technologies in agriculture, industry, and nuclear batteries for space exploration.
The reality, of course, depends on the observer. I am fully aware that others have different views of the reality of Atoms for Peace over seventy years. Countless articles and numerous books have been written about the initiative to praise its accomplishments or point out its failings. It certainly had some of each. Some saw it as a sinister move by Americans to control the nuclear world. For example, critics say the U.S. Information Agency (USIA) mounted an intense propaganda campaign, “aimed to strike a blow against the Soviet Union in the contest for world supremacy, to cement the United States’ role as the global leader in nuclear technology, and to reinforce or create alliances with other nations that would support the United States in the Cold War.”[7] The views across the globe vary widely. Some in the developing countries of the world first rejoiced and later were dismayed with what they viewed as limited benefits. Several of the bilateral initiatives the United States mounted, such as the early ones in the Philippines and Brazil, were unsuccessful.[8] However, today 32 countries have nuclear power plants that generate about 10 percent of the world’s electricity. Over 50 countries utilize nuclear energy in about 220 research reactors. In addition to research, these reactors are used to produce medical and industrial isotopes.[9] Most of these countries were assisted by the United States or the Soviet Union and later, Russia.
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