A Reflection on the 2023 Hiroshima ICAN Academy

The views expressed herein belong solely to the author and do not necessarily reflect those of the U.S. Government.

As I stood outside of the Hiroshima Prefectural Industrial Promotion Hall, now memorialized as the Atomic Bomb Dome, I was amazed by the profound stillness of the park even though it sat in the shadow of the city’s tall buildings beside busy streets filled with cars and pedestrians. 

I glanced at an image on my phone of the area taken several days after the bomb dropped. The Atomic Bomb Dome stood defiantly amidst the wasteland of flattened buildings and burnt rubble. Now, it stood beside large green trees and towering apartment buildings in the gaze of a large athletic stadium. I had learned that the river beside me, now full of boats bringing tourists to the nearby Miyajima Island, was once filled with bodies of people who sought a brief relief for their burning flesh. I tried to imagine how this peaceful and modernized city looked in 1945, but visualizing such horror was beyond my imagination.

Without intentionally traveling to the Peace Park in Hiroshima, one could almost entirely overlook the city’s tragic history. Amidst the modern stores, apartment buildings, and restaurants, several buildings that survived the atomic bomb blast have been preserved, bearing the heavy weight of Hiroshima’s legacy. They remember the flattened buildings, waves of fire, black rain, and harrowing human cries for water.

Clara Sherwood and the ICAN Academy

The New Voices on Nuclear Weapons Fellowship at the Federation of American Scientists helped me enter the field with no prior knowledge of nuclear weapons, let alone deterrence theory and the history of nuclear proliferation. I can confidently say that without this fellowship opportunity, I would not have thought I could have the authority to speak about nuclear weapons.

Many conversations and debates about nuclear weapons are rooted in complicated theories and hypothetical scenarios, making it difficult to join the discussion. While I believe it’s challenging for any human brain to fully internalize nuclear weapons’ lethal capacity, we can comprehend how nuclear weapons surpass the threats posed by other forms of warfare in terms of their destructive and indiscriminate potential.

I applied to the 2023 Hiroshima-ICAN Academy on Nuclear Weapons and Global Security to conceptualize the true destructive power of a nuclear weapon. Prior to the academy, I believed indisputable international norms prevented government officials from accepting disarmament and abolition as plausible nuclear policy guidelines. In speaking with hibakusha and many young activists in Japan, my preconceived notion was challenged; I learned that the propensity to dismiss the feasibility of nuclear abolition is not innate. Those who have experienced the apocalyptic repercussions of a nuclear weapon not only endorse the necessity of abolition but themselves underscore that the pursuit of disarmament is not just a policy objective but a moral responsibility—one that demands collective action and a commitment to preventing future generations from experiencing the unspeakable tragedies of the past.


The 2023 Hiroshima-ICAN Academy on Nuclear Weapons and Global Security is organized by Hiroshima Prefecture and the International Campaign to Abolish Nuclear Weapons (ICAN), the 2017 Nobel Peace Prize laureate. The goal of the program is to educate young leaders who can make concrete contributions toward a more peaceful and secure world. In addition to several peers from the United States, I joined other participants from China, Italy, India, Kenya, Lebanon, Ukraine, and more. 

The 2023 Hiroshima-ICAN Academy hosted several online lectures and four days of educational sessions in Hiroshima, Japan. Online webinars gave participants the opportunity to interact with famous activists, such as Koko Kondo, Mary Dickson, and Melissa Parke, and hear from esteemed professionals in the nuclear field like Dr. Vincent Intondi and Izumi Nakamitsu. We learned about the suffering of downwinders in the United States, ICAN’s initiatives towards abolition, the UN’s disarmament efforts, and the racial history of nuclear weapons testing and usage. Prior to the online portion of the academy, I knew nothing of the intersectionality of nuclear weapons threats. 

While in Hiroshima, we had a busy week of meetings, lectures, and tours, including a guided tour of the Peace Park and meetings with Hiroshima Mayor Kazumi Matsui, Hiroshima Governor Hidehiko Yuzaki, and atomic bomb survivor Keiko Ogura. Together, we learned about Hiroshima nonprofit efforts to support atomic bomb survivors, discussed the ecological effects and colonial history of nuclear weapons testing, and planned how to effectively interject discussions about disarmament in our respective communities. 

The most memorable part of the ICAN Academy for me was speaking with atomic bomb survivors, also known as hibakusha. I was fortunate to spend several hours with hibakusha Ms. Sadae Kasaoka, who was 12 years old when the atomic bomb dropped. Ms. Kasaoka urged all of the Hiroshima ICAN participants to share her story with our communities. 

Sadae Kasaoka presenting

I was struck by Ms. Kasaoka’s bravery and resilience. No human wants to dwell on the most traumatic experience of their lives, let alone recount it for hundreds of listeners each year. However, Ms. Kasaoka has been doing so year after year for the benefit of our education.

Like many children in Japan during World War II, Ms. Kasaoka would help demolish wooden houses to prevent the spread of fire after air raids. Her life consisted of work, rushing to bomb shelters, and fearing for her family. On the morning of August 6, 1945, Ms. Kasaoka was in her home when the atomic bomb was dropped. Ms. Kasaoka saw a blast of light through the window of her home and was knocked down by the initial blast of the bomb. Hours later, the images she would see in her town would be seared into her memory forever. 

During our conversation with Ms. Kasaoka, she recounted the destruction of her friends’ homes and vividly remembered watching humans walk up the mountain, skin hanging off of their bodies like ghosts. When her father was brought back to the house on a stretcher several hours later, she did not recognize him because his face had significantly swelled and his skin was burnt black. She would spend the next two days applying cucumbers and potatoes to his skin to cool the burning while picking maggots out of her father’s flesh as he pleaded with her for water. Later, she would be brought a bag of ashes and hair, allegedly belonging to her mother. The atomic bomb would leave Sadae Kasaoka an orphan like thousands of young Japanese children in Hiroshima and Nagasaki. In Ms. Kasaoka’s words, “This is the reality of war.” Her story is only one of hundreds of thousands.

Clara and Keiko Ogura, a guest speaker and hibakusha

Prior to my fellowship with FAS, like many young Americans, I believed that nuclear weapons were a rusting relic of the past. At the end of my fellowship, I recognize these weapons are being cleaned and shined as arsenals expand and the risk of nuclear weapons use grows to be higher than at any time since the Cold War. Both FAS and the ICAN Academy led to my realization of a sobering truth: nuclear weapons cannot coexist with mankind indefinitely.


The Federation of American Scientists values diversity of thought and believes that a range of perspectives — informed by evidence — is essential for discourse on scientific and societal issues. Contributors allow us to foster a broader and more inclusive conversation. We encourage constructive discussion around the topics we care about.

New Voices on Nuclear Weapons Fellowship: Creative Perspectives on Rethinking Nuclear Deterrence 

After decades of reductions in the number and salience of nuclear weapons, they are once again at the center of international security. All nine nuclear-armed states are updating their arsenals, and several are expanding them. But despite new military technology and new risks, the concepts underpinning nuclear deterrence have changed little since the height of the Cold War. It is more important than ever that the nuclear policy community recruit new voices from diverse demographic and socioeconomic backgrounds to bring new perspectives, skills, and ideas into the field.

To empower new voices to start their career in nuclear weapons studies, the Federation of American Scientists launched the New Voices on Nuclear Weapons Fellowship. Between May and August 2023, each of our inaugural fellows–Anna Pluff, Clara Sherwood, Cameron Vega, and Charlotte Yeung–was paired with a senior academic or policy expert (John Emery, Jamie Withorne, Alan Robock, and Lovely Umayam) to co-author a research project that provides a creative perspective on nuclear deterrence policy.

As a culmination of this year’s fellowship, FAS hosted a showcase featuring presentations by fellows on their research following a Q&A session, as well as remarks by FAS staff on the fellowship’s structure, goals, and role in empowering the next generation of nuclear policy experts. A recording of the showcase is available for viewing below.

Fellowship Showcase

Fellowship Projects and Publications

New Voices on Nuclear Weapons fellows have had their research projects published across a variety of mediums. Please see below the fellows’ project summaries and publications related to this fellowship to date; this list will be updated as their research continues to be finalized.

Anna Pluff

In the early years of the Cold War, many scientists from the Manhattan Project fervently believed in the idea of “One World or None” and promoted nuclear one worldism. Though the scientific profession had relatively little experience with public engagement before the 1940s, scientists banded together to stretch the political possibilities of professional modes of association to foster support for world government. Anna’s case study looks at the historic role that scientific activism played in nuclear policy through one-worldism and how scientific activism can become a viable force in rethinking deterrence today.

Publications

Clara Sherwood

Targeted disinformation and rapid digital communication are complicating nuclear deterrence and crisis management in an unprecedented manner. While nuclear discussions have traditionally occurred privately between governments, in the 21st century, there are a myriad of different actors participating in global nuclear conversations. Clara’s research aims to describe how digital narratives from non-governmental actors are contributing to escalation management, nuclear discourse, and nuclear rhetoric in the context of the Russian-Ukrainian War.

Publications

Cameron Vega

American nuclear deterrence inherently relies on ethical principles dictating the appropriate use of nuclear weapons; however, these ethical principles insufficiently consider modern scientific modeling demonstrating the devastating climatic impacts of nuclear use. Cameron’s research aims to update the ethical principles underpinning American nuclear deterrence to account for the realities of how nuclear strikes would affect the local environment and global climate change.

Publications

Charlotte Yeung

The nuclear narratives told and believed today are rooted in how nuclear weapons are discussed in schools, culture, and locality. The branching narratives in America and Japan are particularly distinct and told through different forms of official narratives taught in textbooks, visual aesthetics, preservation of nuclear-related sites, movements, and the military-industrial complex. Charlotte’s exhibit and poetry ask how education and culture are the roots through which come the multidimensional nature of how Americans and Japanese learn about nuclear weapons and how those define the systems that shape public opinion about nuclear weapons today in those two countries.

Publications