When most people hear the words “IAEA”, they imagine nuclear power plants, radioactive waste, or weapons capable of destroying entire cities. I was no different when I set out to look into the international Atomic Energy Agency, or IAEA as it is more commonly called. My first thought was that the organization’s task would be inspecting nuclear facilities and preventing countries from secretly developing nuclear weapons.
There is some truth to that, but it is only half the story.
While the IAEA does see to those inspections, its work extends in other directions. One finds the agency helping hospitals with cancer treatment, aiding farmers against drought and blight, looking at ocean pollution or even preserving old artefacts. It also has a programme to train women in nuclear science. Such activities put a different spin on the technology; it is neither wholly good nor bad, but what it means is determined by who wields it and how it is governed.
This is what makes the IAEA unusual. It must encourage the peaceful use of nuclear science while making certain the very same materials are not put to military use. The question it must answer is how the world can have the benefit of such a potent force without ceding control of the risks involved.
History
One has to go back to the dawn of the nuclear age to understand the IAEA. In the wake of Hiroshima and Nagasaki, the technology was feared. But scientists were already finding ways to apply it in industry, medicine and agriculture for peaceful ends.
Then came 1953 and President Dwight D. Eisenhower’s “Atoms for Peace” address before the UN General Assembly. He made the case for turning nuclear knowledge away from destruction and toward human development and health. That idea would come to fruition in the form of the IAEA. After 81 nations gave their approval to the Statute in 1956, it took effect in July 1957 and the Agency was set up as an autonomous body of the United Nations.
Its mandate is twofold: to advance atomic energy for the sake of prosperity and peace, and to ensure it is not diverted for the making of weapons. On the surface these duties appear at odds. How can an organisation champion nuclear technology and at the same time probe its misuse? But then again, the principles of nuclear science are like that; they can generate power or a bomb, cure or harm. The IAEA exists because the technology was too consequential to be left unsupervised.
Structure
To understand how the IAEA carries out such a wide range of responsibilities, it is also worth looking at how the organization is structured. First, its headquarters are in Vienna, Austria, and it supports its global activities through regional offices in Toronto and Tokyo, liaison offices in New York and Geneva, and nuclear laboratories in Vienna, Seibersdorf, and Monaco. Together, these offices enable the Agency to carry out its international mission in nuclear verification, safety, security, and the peaceful applications of nuclear science.
Now that we have looked at how the IAEA was created and how it is structured, let’s find out what its core objectives and functions are, starting with its major achievements in peaceful nuclear technology.
Main Achievements
First, I want to introduce Atoms4NetZero. Launched at COP27 in 2022, it is one of the IAEA’s flagship climate initiatives, helping Member States achieve net-zero greenhouse gas emissions through science-based energy planning.
Simply put, it provides objective modelling and technical expertise to identify the most effective mix of low-carbon energy sources, including nuclear energy, renewable energy, and other clean technologies. For example, it may recommend using a certain amount of wind energy and a certain amount of nuclear energy instead of carbon-emitting fossil fuels like coal and oil.
To do this, it utilizes a computer simulation program called MESSAGE. Using the IAEA’s MESSAGE energy planning model, governments can estimate future energy demand, optimize their electricity systems, and develop long-term strategies to reduce greenhouse gas emissions.
Atoms4NetZero also supports the assessment of advanced nuclear technologies, including Small Modular Reactors (SMRs). Through technical assistance, expert missions, training programmes, and international partnerships, the IAEA helps countries evaluate how these technologies can be used to decarbonize hard-to-abate sectors such as steel, cement, hydrogen production, and transportation.
Unlike organizations that advocate specific energy policies, the IAEA’s role is not to force countries to use only one energy source. Instead, it provides scientific modelling and technical expertise so that governments can make the most appropriate decisions based on their own circumstances. For instance, Estonia has used the MESSAGE model to evaluate how SMRs could contribute to its future energy system, and China has used it to compare large nuclear reactors and SMRs in long-term planning.
Of course, debates still remain regarding construction costs, radioactive waste, and the time required to build nuclear power plants. Therefore, we should view the IAEA not as an organization that unconditionally promotes nuclear energy, but as one that helps countries identify the most suitable energy mix through objective scientific analysis.
However, today’s safeguards system was not created all at once. An important turning point came after the 1991 Gulf War, when it was discovered that Iraq had secretly operated an undeclared nuclear weapons programme. This showed that inspecting only declared nuclear facilities was not enough. As a result, the IAEA significantly strengthened its safeguards system by expanding environmental sampling, satellite imagery, and broader inspection authorities through the Additional Protocol.
Many people misunderstand the role of the IAEA, thinking it is an international police force that can enter any country whenever it wants. In reality, its authority depends on international agreements and the cooperation of Member States.
That is why I personally think the IAEA should continue maintaining strong cooperation and trust with its Member States. Even the best verification system cannot work properly if countries refuse to cooperate or if international trust breaks down. Behind every successful verification system is a foundation of international cooperation, transparency, and mutual trust.
Another core pillar is nuclear safety. One thing I found especially interesting is that the IAEA does not assume accidents happen because of a single mistake. Instead, its safety philosophy is based on the idea of “defence in depth.” This means safety should never rely on just one barrier, one machine, or just one person. Multiple independent layers of protection are built into nuclear facilities so that if one layer fails, another can still prevent an accident.
To me, the biggest lesson from the IAEA is not only about nuclear safety, but about how we should think about safety itself. If one layer fails, another should already be there to protect people. Real safety should never have a single point of failure; it should always be built in layers—not only for nuclear technology, but for many other parts of our lives as well.
Lesser-Known achievements
Now, I’d like to address some significant but lesser-known contributions of the IAEA that show how nuclear science has been helping human beings in remarkable ways.
First, Rays of Hope, a project launched in 2022 to improve access to cancer diagnosis and treatment through nuclear medicine and radiotherapy in low- and middle-income countries. Over 90 Member States have requested assistance, making it one of the Agency’s fastest-growing programmes. It provides essential medical equipment like linear accelerators and SPECT-CT scanners while helping countries build their own national infrastructure.
Reflecting on this, I comprehended that the real value of Rays of Hope isn’t just handing out medical equipment. It’s about creating connections between governments, hospitals, and medical professionals. Saving lives should never depend on a single organization—it is a shared duty for all of us.
The next surprising area is food security through Atoms4Food, launched jointly with the FAO in 2023. It helps countries increase agricultural productivity, reduce food losses, improve food safety, and adapt to climate change.
Atoms4Food provides tailored technical assistance such as mutation breeding, where scientists use radiation to create natural genetic variations and select crops more resistant to drought or diseases. However, this made me wonder: is hunger really caused simply by a shortage of food? Hunger can be caused by war, climate change, poverty, and economic inequality. Innovation alone is not enough; scientific innovation changes the world only when it actually reaches the people who need it most.
One of the most notable applications within Atoms4Food is the Sterile Insect Technique, or SIT. Developed by the IAEA and FAO, SIT uses ionizing radiation to sterilize large numbers of male insects before releasing them into affected areas. When these sterile males mate with wild females, no offspring are produced, causing the pest population to decline naturally without chemical pesticides.
Learning about SIT completely changed my perspective. I perceived that I had been thinking about science too narrowly. Innovation doesn’t always mean creating a newer, stronger machine; sometimes it means looking at an old problem from a completely different perspective and finding a more precise way to solve it at its source.
The IAEA also has a hand in the empowerment of women in nuclear science, an important role it fulfils via the Marie Skłodowska-Curie Fellowship for master’s students and the Lise Meitner Programme for those at the early or mid-point of their careers. In so doing, these programmes open up education and professional networks to create a global nuclear workforce that is more inclusive and diverse.
There is an element of equality in supporting women in science, but it is also about not letting talented researchers slip away on account of an uneven distribution of opportunity. For science to realise its full potential, it must be one’s ability, not gender or background, that opens the door to contribution.
Then there are initiatives such as Atoms for Heritage. Here, nuclear science and accelerator-based technology are put to work to authenticate and preserve our cultural and natural heritage without any harm to it. With ion beams and X-rays from particle accelerators, researchers can get at the elemental make-up of an artefact and learn of its age and provenance. It is a reminder that science has a duty to safeguard humanity’s memory as much as to build the future.
Criticism
Such cases show the IAEA does more for human development than simply monitor nuclear activities, though the Agency is not without its share of criticism and serious challenges, especially when it comes to its safeguards system. Trevor Findlay, for instance, has levelled the charge that a certain “culture of opacity” exists due to the IAEA’s confidentiality and the lack of transparency in some inspection criteria. That makes it hard for the public and Member States to properly appraise the process and may erode confidence in the institution.
While Findlay identifies a genuine institutional failing, one has to view it in the context of international politics. The IAEA is made up of sovereign states with their own economic and security agendas; it is no independent world government and cannot insulate itself from the pressures they bring. Should a government choose to hide information or exploit an institution for political ends, even the best safeguards will be of little use. Accountability is not the IAEA’s alone; Member States have an obligation to be forthcoming and to abide by the rules they have set down.
Public perception is another hurdle. Take the discussions around Fukushima: even if the IAEA has determined an activity is in line with safety standards, there can be lingering anxiety and distrust. Dismissing this as a failure to understand the science would be a mistake. An organisation needs to do more than present expert opinion; it must lay out how it has arrived at its conclusions and talk of risk in terms that are accessible. Trust is built on the transparency of decisions as much as on scientific accuracy.
In the years ahead, the IAEA is making greater use of big data, satellite analysis, robotics and machine learning in its safeguards work. These tools can help an inspector spot irregularities and verify things with greater efficiency. But AI is no replacement for the human element. Machines can perpetuate bias and error. The value of these technologies lies in being paired with the objectivity and caution of a trained inspector, not in ceding final judgment to them.
Conclusion
In conclusion,the IAEA is not just an inspector of nuclear sites. From medicine and agriculture to energy and the preservation of culture, it is an organisation that seeks to put nuclear science to peaceful use for the betterment of humanity. Yet its efforts are circumscribed by political realities and a need for trust. The path forward for nuclear technology will be determined less by the sophistication of the machinery and more by the honesty of governments and the credibility of the institutions meant to oversee them. The IAEA may never be able to remove every nuclear risk. Nevertheless, by combining scientific expertise, international oversight, and human judgment, it can help ensure that one of humanity’s most powerful technologies is used with greater responsibility rather than greater fear.
By: Sehee Ju
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