"[Arms Control Today] has become indispensable! I think it is the combination of the critical period we are in and the quality of the product. I found myself reading the May issue from cover to cover."

– Frank von Hippel
Co-Director of Program on Science and Global Security, Princeton University
June 1, 2018

U.S., Japan Reaffirm Alliance in White House Meeting

May 2021

U.S. President Joe Biden and Japanese Prime Minister Yoshihide Suga strongly reaffirmed the U.S.-Japanese alliance during Biden’s first in-person meeting as president with a foreign leader, at the White House on April 16, calling it a “cornerstone of peace and security in the Indo-Pacific region and around the world.” The leaders also described a “shared vision for a free and open Indo-Pacific [region] based on our commitment to universal values and common principles and the promotion of inclusive economic prosperity.”

U.S. President Joe Biden and Japanese Prime Minister Yoshihide Suga take part in a joint press conference in the Rose Garden of the White House in Washington, D.C. on April 16. (Photo: Mandel Ngan/AFP via Getty Images)In a press conference after the meeting, Biden emphasized U.S. commitments to Japan’s defense and “ironclad support for…our shared security.”

The leaders’ formal joint statement focused on many strategic concerns, including global threats from COVID-19 and climate change, human rights in Hong Kong and among the Uyghurs in China’s Xinjiang region, and the denuclearization of North Korea.

They expressed “their concerns over Chinese activities that are inconsistent with the international rules-based order, including the use of economic and other forms of coercion.” They said they “oppose any unilateral attempts to change the status quo in the East China Sea,” underscored the importance of peace and stability across the Taiwan Strait, and objected to China’s “unlawful maritime activities” in the South China Sea. They pledged to work jointly on the rapid development, security, and openness of fifth-generation communications technologies and “to rely on trustworthy vendors.” They also recognized the need for cooperation with China “on areas of common interest.”

Their vision of strengthening the U.S.-Japanese alliance relies on having Japan bolster its national defense capabilities as part of the Treaty of Mutual Cooperation and Security that the two countries signed in 1960. The leaders committed “to deepen defense cooperation across all domains, including cyber and space, and to bolster extended deterrence.”

This would involve following through on plans to relocate some U.S. Marine Corps troops from Okinawa to Guam and working with allies and partners such as the Quad, the Association of Southeast Asian Nations, and the trilateral alliance with South Korea.

In a statement, the Chinese Embassy in Washington described the Biden-Suga comments on Hong Kong, Xinjiang, and the South China Sea as “harmful” and going “far beyond the scope of normal development of bilateral relations.” Taiwan Presidential Office spokesman Xavier Chang embraced the joint statement and underscored “the importance of peace and stability across the Taiwan Strait.”—SANG-MIN KIM

U.S., Japan Reaffirm Alliance in White House Meeting

Resources for Journalists

Reality Check: The Atomic Bombings of Hiroshima & Nagasaki



Seventy-five years ago on July 16 1945, the nuclear age began with the world's first nuclear weapons test explosion in the New Mexico desert. In this annotated video essay from the Arms Control Association, we describe the events that transpired three weeks later with the atomic attacks on the cities of Hiroshima and Nagasaki.

A more detailed review of the geopolitical, environmental, and humanitarian impact of nuclear weapons, the rise of a global disarmament movement, and the work of the hibakusha (survivors of the nuclear attacks) is available in our special July/August 2020 issue of Arms Control Today, available at ArmsControl.org/75years.


On July 16, 1945, in the New Mexico desert, the United States detonated the world’s first nuclear weapons test explosion.

Three weeks later, U.S. bombers carried out surprise atomic bomb attacks on the cities of Hiroshima and Nagasaki.

At 8:15 in the morning on August 6, the uranium-based atomic bomb "Little Boy" was used on Hiroshima, home of approximately 320,000 people.

The blast packed a destructive force equivalent to about 15 kilotons of TNT.

In minutes, half of the city ... vanished.

The explosion produced a supersonic shock wave followed by extreme winds that remained above hurricane force over three kilometers from ground zero.

A secondary and equally devastating reverse wind followed, flattening and severely damaging homes and buildings several kilometers further away.

The intense heat of the Hiroshima bomb reached several million degrees Celsius and scorched flesh and other flammable materials over three kilometers away.

Flash burns from the primary heatwave caused most of the deaths at Hiroshima.

Three days later, U.S. leaders ordered “Fat Man,” a plutonium-based bomb with an explosive yield of 21 kilotons, dropped on Nagasaki, home to over 260,000 people.

The attack occurred two days earlier than planned, 10 hours after the Soviets entered the war against Japan, and as Japanese leaders were contemplating surrender.

Intense firestorms ravaged each city for hours after each attack. They leveled neighborhoods only partially damaged by the blast itself, killing more victims trapped under fallen debris.

Black rain laden with radioactive soot and dust contaminated areas far away from ground zero.

By the end of 1945, the blast, heat, and radiation of the nuclear attacks had killed an estimated 74,000 in Nagasaki and 140,000 in Hiroshima.

Many of those who survived the nuclear attacks would die from radiation-induced illnesses for years to come.

Historians now largely agree that the United States did not need to drop the bombs to avoid an invasion of Japan and bring an end to World War II.

Though aware of alternatives, President Harry Truman authorized use of the bombs in part to further the U.S. government’s postwar geostrategic aims.

Survivors of the nuclear attacks, known as hibakusha, and their descendants formed the nucleus of the Japanese and global nuclear disarmament movements.

The remaining hibakusha and organizations around the globe continue to work for a nuclear weapons-free world “so that succeeding generations of people will not see hell on earth ever again.”

Today, nine states still possess more than 13,000 nuclear weapons.

The risk of nuclear war is still with us.

To reduce this danger, we must freeze and reverse the arms race and, ultimately, eliminate nuclear weapons.

For more information:

Written by Daryl G. Kimball
Edited and Produced by Tony Fleming

Photos Credits:
Atomic Heritage Foundation ・ Hiroshima Peace Memorial Museum
UN/Nagasaki International Cultural Hall ・ UN/Yosuke Yamahata
Galerie Bilderwelt/Getty Images ・ Joyce Naltchayan/AFP via Getty Images
Tomohiro Ohsumi/Getty Images ・ Junko Kimura/Getty Images
Bettmann/Getty Images ・ Peter Parks/Getty Images


Seventy-five years ago, the nuclear age began with the world's first nuclear weapons test explosion in the New Mexico desert. In this annotated "silent film"-style video essay from the Arms Control Association, we learn about the events that transpired three weeks later with the atomic attacks on the cities of Hiroshima and Nagasaki.

Country Resources:

Freeing the World of Nuclear Weapons: Arms Control Today interviews Hiroshima Mayor Kazumi Matsui

July/August 2020

As the site of the first atomic bomb attack, Hiroshima has served as a vital center for education about nuclear weapons and their effects. The people of the city, along with those of Nagasaki, have been steadfast in their advocacy for abolishing nuclear weapons. The survivors of the U.S. atomic bombings on Japan, the hibakusha, have worked to communicate their experience to global citizens and leaders. Kazumi Matsui, Hiroshima’s mayor since 2011, has played a major role in that effort. He serves as president of Mayors for Peace, an assembly of thousands of cities worldwide devoted to protecting cities from the scourge of war and mass destruction.

In a 2016 ceremony, Hiroshima Mayor Kazumi Matsui (right) offers new names to add to the list of the atomic bomb deaths that is kept at the Memorial Cenotaph in Hiroshima. More than 290,000 names have been inscribed inside the memorial's stone vault. (Photo: AFP/Getty Images)In response to the coronavirus pandemic, Hiroshima is planning to scale back large gatherings and instead hold virtual events marking 75 years since the August 6, 1945, bombing. Matsui spoke with Arms Control Today on June 23.

Arms Control Today: Seventy-five years after the first nuclear test explosion and the atomic bombings that destroyed your city and Nagasaki, what message do you, as the president of Mayors for Peace, and the people of Hiroshima, including the hibakusha, have for others around the world about living under the dark shadow of nuclear weapons?

Mayor Kazumi Matsui: In August 1945, two single atomic bombs dropped on the cities of Hiroshima and Nagasaki instantly reduced them to rubble, taking more than 210,000 precious lives. With almost 75 years since the bombings, the hibakusha, those who barely survived, still suffer from the harmful aftereffects of radiation. While their minds and bodies are in pain, they, together with other members of the public, continue to make their appeal that “no one else should suffer as we have.”

However, today, the nuclear-armed states possess about 13,000 nuclear warheads. The destructive power of every one of them is far above the atomic bombs dropped on Hiroshima and Nagasaki. These weapons could be used by accident or for terrorism. The current situation is far from what the citizens of Hiroshima, including the hibakusha, have been seeking for so long.

This is because the nuclear-armed states and their allies consider nuclear deterrence as essential for their security assurance, prioritizing the pursuit of only their own misguided national interest. However, this poses a grave threat to the survival of us all, the whole of humanity.

The current global coronavirus pandemic is a transboundary crisis that touches us all. We are experiencing firsthand that we can confront and defeat common threats through solidarity and cooperation. Based on what we have learned from this experience, we must build a robust global coalition of citizens everywhere to address and solve global security challenges, especially nuclear weapons. We must not take action based on self-centered nationalism.

I sincerely hope that everyone in the world will share in the hibakusha’s message and join us in realizing a peaceful world free of nuclear weapons.

ACT: There are now fewer and fewer hibakusha and fewer people who have witnessed the devastation of the atomic bombings. What can be done over the next 75 years to remind current and future generations of the experiences and the messages of the survivors of the Hiroshima and Nagasaki bombings and the health impacts of the use of nuclear weapons? Are we at risk of forgetting?

Matsui: The average age of the hibakusha has exceeded 82. With their unshakable conviction that “no one else should suffer as we have,” they have conveyed their experiences and their desire for peace to younger generations. However, if we leave this important task of passing down to the future generations to the hibakusha alone, then unfortunately, sooner or later, there will no longer be anyone able to do so.

In order to ensure that the hibakusha’s messages will be faithfully inherited and shared with future generations, the City of Hiroshima conducts various initiatives.

The Hiroshima Peace Memorial Museum exhibits belongings and photos of victims along with the words of their bereaved family members. Each item conveys to visitors the memories, sentiments, and the pain and sorrow of the victims and the bereaved. In addition, displays on the harm caused by the radiation tell the world of the inhumane nature of nuclear weapons. We encourage all world leaders and their fellow citizens to visit this museum to see the long-term catastrophic effects of the atomic bombings for themselves.

We also have a project to train A-bomb Legacy Successors, volunteers who pass down hibakusha experiences and their desire for peace on their behalf. Today, 131 successors are engaged in such activities.

We also make videos of hibakusha testimonies and collect memoirs in collaboration with the government. We are translating these into many languages so that all can understand their tragic experiences.

We intend to continue our efforts to enrich and expand these and make them available physically and online to share the messages of the hibakusha with the younger generation, who are the future of our society.

ACT: You and others have noted that "vital nuclear arms control agreements are being abandoned, budgets for development and production of new nuclear weapons are growing, and the potential for nuclear weapons use is too dangerous to tolerate. We are badly off course in efforts to honor the plea of the hibakusha and end the nuclear threat.” On an international level, how can and should the world get back on track toward nuclear disarmament?

Matsui: We see unilateralism is rising in the international community, and exclusivity and confrontational approaches have increased tensions between nations. Now, the international situation surrounding nuclear weapons is very unstable and uncertain. But why is that? Fundamentally, policymakers should tackle issues, even if they are rooted in local contexts, from a global perspective. However, they are more likely to jump to a short-term compromise, which results in the current international situation.

In order to break the status quo of dependence on nuclear deterrence and get back on track toward nuclear disarmament, it is essential to mobilize civil society’s shared values and create a supportive environment to give world leaders the courage to shift their policies.

Those shared values and desires of civil society aim at securing every citizen’s safety and welfare. As a nonpartisan organization made up of the very heads of local governments responsible for realizing that goal, Mayors for Peace implements a number of relevant initiatives.

Specifically, by utilizing its network of more than 7,900 member cities in 164 countries and regions, Mayors for Peace conveys the realities of the atomic bombings and works to increase the number of people who share in the hibakusha’s message. In this way, we can build a consensus among global civil society that the elimination of nuclear weapons is key to the peaceful future we need. This consensus will serve as the foundation for a collaborative international environment in which policymakers around the world can take decisive steps forward toward the total elimination of nuclear weapons.

I sincerely hope that all states, including the nuclear-armed ones, will engage in good-faith dialogue led by world leaders who wholeheartedly accept the earnest wish of the hibakusha, that is, the realization of nuclear weapons abolition as soon as possible. Through this, they will surely share wisdom and come up with an approach to make substantial progress in nuclear disarmament and nonproliferation.

ACT: What more can be done at the local level, especially by the younger generations, wherever they may live, to support global efforts for nuclear nonproliferation and disarmament?

Matsui: As I understand it, what civil society is sincerely seeking is to secure the public’s safety and welfare. But when it comes to big global challenges to the peaceful existence of humanity as a whole, such as the abolition of nuclear weapons, we should not limit our solutions to the framework of nation-states. Solutions should also be based on that sincere desire of civil society at the grass-roots level across the world. I believe that we should spread awareness of this throughout civil society.

My hope for younger generations, the future of our society, is that they will start thinking about the preciousness of their daily lives, which are supported by rules based on mutual trust. Hopefully, they will then understand that this is exactly what peace is and think what they can do to preserve it and take action.

In civil society, which is based on democracy, if every person develops such concepts of peace and takes action accordingly, it follows that policymakers will be elected who can realize our common wish. It is also not a dream for them to become policymakers themselves.

If more people come to envisage a future different from the past and work to realize it, they will become the drive to change the world.

Mayors for Peace puts emphasis on peace education aimed at raising awareness among younger generations as part of its intensified efforts. Through our various programs, we nurture young leaders who engage in peace activities proactively.

ACT: What more can Japan’s national leadership do to move us closer to the peace and security of a world without nuclear weapons?

Matsui: As the only country to have experienced the devastation caused by nuclear attacks, Japan has a responsibility to share the hibakusha’s sincere desire to abolish nuclear weapons with the world and take the lead on various initiatives to make that a reality.

Japan has a role in international society as a “bridge” between the nuclear-armed states and the states-parties of the Treaty on the Prohibition of Nuclear Weapons to foster and promote dialogue and cooperation. To realize abolition as soon as possible, Japan can and should do even more to fulfil this role. I hope this will happen from the bottom of my heart.

With the declining number of atomic bomb survivors, Hiroshima is leading efforts to share their experience for generations to come.

Setsuko Thurlow Remembers The Hiroshima Bombing

July/August 2020
By Setsuko Thurlow

I use the word “miracle” lightly, but really, 71 years ago I did experience a miracle, and here I am in your company today.

Setsuko Thurlow, speaks for the International Campaign to Abolish Nuclear Weapons at a conference in Madrid on February 24. She has spent decades describing her experience as a survivor of the 1945 atomic bombing of Hiroshima. (Photo: David Benito/Getty Images)I would like to share my personal experience with you. I know many of you are experts, arms control specialists; and I’m sure you’re quite well informed and knowledgeable of all kinds of human conditions, including the humanitarian consequences of nuclear weapons. But I thought I would offer my personal and first-hand experience.

In 1945 I was a 13-year-old eighth grade student in the girls’ school, and on that very day, I was at the army headquarters. A group of about 30 girls had been recruited and trained to do the recording work of the top-secret information.

Can you imagine, a 13-year-old girl doing such important work? That shows how desperate Japan was.

I met the girls in front of the station before 8 o’clock; and at 8 o’clock, we were at the military headquarters, which was 1.8 kilometers from ground zero. I was on the second floor and started with a big assembly, and an officer gave us a pep talk.

This is the way you start proving your patriotism for emperor, that kind of thing. We said, “Yes sir, we will do our best.” When we said that, I saw the blaze of white flash in the window, and then I had the sensation of smoking up in the air.

When I regained consciousness in the total silence, I was trying to move my body. I couldn’t move it at all. I knew I was faced with death.

Then I started hearing whispering voices of the girls around me: “God, help me, mother help me. I’m here.” So, I knew I was surrounded by them, although I couldn’t see anybody in the darkness.

Then, suddenly, a strong male voice said, “Don’t give up. I’m trying to free you.” He kept shaking my left shoulder from behind and pushed me. We kept kicking, pushing; and you see, we’re finally coming to the door opening, get out that way, crawl, as quickly as possible.

By the time I came out of the building, it was on fire. That meant about 30 other girls who were with me in that same place were burning to death. But two other girls managed to come out, so three of us looked around.

Although that happened in the morning, it was very dark, dark as twilight, and I started seeing some moving black object approaching to me. They happened to be the streams of human beings slowly shuffling from the center part of the city to where I was.

They didn’t look like human beings. Their hair was standing straight up. Burned, blackness, swelling, bleeding. Parts of the bodies were missing. The skin and flesh were hanging from the bones. Some were carrying their own eyeballs, you know, they’re hanging from the eye socket.

They collapsed onto the ground, their stomach burst open with their intestines sticking out. The soldier said, “Well you girls, join that procession, escape to the nearby field.”

That’s what we did by carefully stepping over the dead bodies, injured bodies. It was a strange situation. Nobody was running and screaming for help. They just didn’t have that kind of strength left.

They were simply whispering, “Water please, water please.” Everybody was asking for water.

We girls were relatively lightly injured. So, by the time we got to the hillside, we went to a nearby stream and washed off the blood and dirt, and we took off our blouses and soaked them in the stream and dashed back to hold them over the mouths of the dying people.

You see, the place we escaped to was the military training ground, a huge place, about the size of two football fields. The place was packed with the dead and dying people.

I wanted to help, but everyone wanted water, but there were no cups and no buckets to carry the water. That’s why we resorted to that rather primitive way of so-called rescue operation. That was all we could do.

I looked around to see if there were any doctors around us, but I saw none of them in that huge place. That meant, tens of thousands of people in that place without medication, no medical attention, ointment.

Nothing was provided for them. Just a few drops of water from a wet cloth. That was the level of support, rescue operation you could offer.

We kept ourselves busy all day doing that. Of course, doctors and nurses were killed too. Just a small percentage of the medical professionals survived, but they were serving people somewhere else, not where I was.

So, we were three girls, together with hundreds of other people who escaped to the place. We just sat on the hillside and all night, we watched the Empire City burn, to see the moon from the massive scale of death and suffering we had witnessed.

I was mad, strongly, appropriately, emotionally. Something happened to my psyche. When we close off our psychic memory, in an ultimate situation like that, the cessation of the emotions takes place automatically. I’m glad of that because if we responded emotionally to every graphic sight I witnessed, I couldn’t have survived.

The day ended. Other people can tell about being near the rivers, full of floating dead bodies, and so on. But I didn’t see that then.

But I’ll tell you about the few people in my family, my friends, how they lost their lives. That will show you just how the bomb affected human beings.

I mentioned about 30 girls who were with me, but the rest of the students were at the city center. The city was trying to establish the facilities to be prepared for the air raid.

So, the seventh-grade and eighth-grade students from all the high schools were recruited, went to the center of the city. We were providing the minor labor.

A victim of the Hiroshima atomic bomb is treated at a makeshift hospital in September 1945. Immediately after the bombing, Setsuko Thurlow sought to provide aid and comfort to wounded survivors. (Photo: Wayne Miller/Hulton Archive/Getty Images)Now, they were in the center right below the detonation of the bomb. So they are the ones who simply vaporized, melted, and carbonized. My sister-in-law was there with a student. She was one of the teachers supervising the students. We tried to locate her corpse, but we have never done so. On paper, she’s still missing, together with thousands of other students.

I understand there were several thousand students, 8,000 or so. They simply disappeared from the face of earth. The temperature of the blast, I understand, was about 4,000 degrees Celsius.

Another story I can tell is about my sister and her four-year-old child, who came back to the city the night before to visit us. Early in the morning, they were walking over the bridge to the medical clinic, and both of them were burned beyond recognition.

By the time I saw them the next day, their bodies were swollen two or three times larger than normal, and they too kept begging for water. When they died, the soldiers dug a hole and threw in the bodies, poured gasoline, and threw a lighted match.

With a bamboo stick, they kept turning the bodies. There I was, a 13-year-old girl, and I was standing emotionlessly just watching it.

That memory troubled me for many years. What kind of human being am I? My dear sister being treated like animal or an insect or whatever.

There was no human dignity associated with that kind of cremation. The fact that I didn’t really shed tears troubled me for many years. I felt guilt.

I could forgive myself after learning how our psyche automatically functions in situations like that. But, you know, it’s the image of this four-year-old child that is burned to my retina. It’s always there.

That image just guided me, and it’s the driving force for my activism. Because that child came to represent all the innocent children of the world without understanding what was happening to them. They agonized.

So that child is a special being, a special memory. If he were alive, he would be 75. It’s a sobering thought, but regardless of passage of time, he’s still a four-year-old child guiding me.

It was interesting, [President Barack] Obama made a lot of references about innocent children, how we need to protect each one of them, and I was weeping. I couldn’t help it.

Now, let me tell you another example of how the atomic bomb affected the human beings. We rejoiced to hear my favorite uncle and aunt survived. They were okay. They didn’t have any visible sign of injury.

Then several days later, we started hearing a different story. They got sick, very sick. So after my sister and my nephew died, my parents went over to my uncle’s place, started looking after them.

Their body started showing purple spots all over the body, and according to my mother, who cared for them until their death, their internal organs seemed to be rotting, dissolving, coming out as a thick black liquid until death.

Now, radiation works in many mysterious and random ways. Some people are killed immediately, some weeks later or months later, a year later. The horrible thing is, 71 years later, people are still dying from the effects of the radiation.

The hibakusha, the survivors, struggled to explain in the aftermath. It’s surviving in the unprecedented catastrophic aura and the unprecedented social, political chaos due to Japan’s defeat and the occupational forces’ strict control over us.

I finished university in Japan, and upon my graduation, I was offered a scholarship, so I came to your country. I came to Virginia, very close to this city.

That was 1954. The United States tested the biggest hydrogen bomb at the Bikini Atoll in the South Pacific that time, creating the kind of situation similar to the Hiroshima and Nagasaki experience.

All of Japan was up in arms with fury. It was not only Hiroshima, not only Nagasaki, now the Bikini Atoll. Well, the United States continued with the testing and actually using them.

That’s when all of Japan became fully aware of the nature of nuclear weapons development. Anyway, at that time, I left Japan, arrived in Virginia, and I was interviewed by the press.

I gave my honest opinion. I was fresh out of college and naive and believed in honesty. I told them what I thought: The United States nuclear policy was bad. It has to stop. Look at all the killings and damage to the environment in the Pacific. That has to stop, and all these kinds of thing I said.

The next day, I started receiving hate letters. “How dare you? Do you realize where you are? Who is giving the scholarship? Go home. Go back to Japan.” Just a few days after my arrival, I encountered this kind of situation, and I was horrified. It was quite a traumatic experience.

What am I going to do? I can’t go back, I just arrived. I can’t put a zipper over my mouth and pretend I never knew anything about Hiroshima bombing.

Would I be able to survive in North America? Well, I spent a week without going to the classroom. I just had to be alone and do my soul-searching.

It was a painful and lonely time in a new country. I hardly knew anybody, and I had to deal with this issue. I’m happy to say that I came out of that traumatic experience with more determination and a stronger conviction.

If I don’t speak out, who will? I actually experienced it. I saw it. It’s my moral responsibility. So, I have my experience to warn the world. We’ve seen this is just the beginning of the nuclear arms race. I just have to warn the world.

Adapted from remarks delivered to the Arms Control Association on June 6, 2016, shortly after U.S. President Barack Obama’s visit to Hiroshima. At the age of 13, Setsuko Thurlow survived the atomic bombing in Hiroshima on August 6, 1945. She has since worked to tell the story of the survivors, the hibakusha. She was the Arms Control Association’s 2015 Arms Control Person of the Year, a leading champion within the International Campaign for the Abolition of Nuclear Weapons (ICAN) for the negotiation of the 2017 Treaty on the Prohibition of Nuclear Weapons, and for that was a co-recipient of the 2017 Nobel Prize for Peace.

Seventy-one years afterward, a survivor recalls helping the wounded on August 6, 1945.

The Hiroshima and Nagasaki Bombings and the Nuclear Danger Today

July/August 2020
By Daryl G. Kimball

The U.S. atomic bomb attack on the people of Hiroshima at 8:15 a.m. on August 6, 1945, and the second attack on the city of Nagasaki at 11:02 a.m. on August 9 killed and wounded hundreds of thousands of unsuspecting men, women, and children in a horrible blast of fire and radiation, followed by deadly fallout. In years that followed, those who survived—the hibakusha—suffered from the trauma of the experience and from the long-term effects of their exposure to radiation from the weapons.

Historians now largely agree that the United States need not have dropped bombs to avoid an invasion of Japan and bring an end to World War II. President Harry Truman and his advisers were aware of the alternatives, but Truman chose to authorize the use of the atomic bombs in part to further the U.S. government’s postwar geostrategic aims.1

The bombings helped to launch the dangerous, decades-long U.S.-Soviet nuclear arms race; and they ignited a debate about the dangers of nuclear weapons, their role in foreign and military policy, their regulation and control, and the morality and legality of their possession and use that continues to this day.

Although nuclear weapons have not been used in a military attack since 1945, they have left a trail of devastation, including cancer from atmospheric nuclear test fallout, toxic waste and environmental contamination, and workers and residents exposed to radiation and hazardous chemicals from nuclear weapons production plants, uranium mines, and research labs.2 All too often, indigenous and disempowered communities have found themselves downwind and downstream.

Beginning with the atomic bombings of Hiroshima and Nagasaki, when U.S. authorities sought to censor information about nuclear weapons, the nuclear weapons establishments have tried to hide and stifle debate about the health and environmental effects of nuclear war and nuclear weapons development, testing, and production.

In 1956, however, the Japanese survivors of the atomic bombings came together and pledged to work to “save humanity from its crisis through the lessons learned from our experiences” and issued their first formal appeal to the world that “there should never be another [h]ibakusha.”

The voices, testimony, and outreach of the hibakusha have been central to the decades-long struggle to put in place meaningful, verifiable, legally binding restraints on nuclear weapons; to realize a global treaty prohibiting their possession and use; and to advance the steps necessary to achieve the peace and security of a world free of nuclear weapons.

Through the decades, persistent citizen pressure and hard-nosed disarmament and nonproliferation diplomacy have produced agreements and treaties that have successfully curbed the spread of nuclear weapons, slowed the arms race, and reduced the danger of nuclear war. These initiatives slashed the staggering size of the Cold War-era U.S. and Russian arsenals, prohibited nuclear test explosions, and strengthened the taboo against nuclear weapons possession and use.

Yet, far too many of these weapons still exist. Combined, the U.S. and Russian nuclear arsenals total some 12,170 nuclear weapons, more than 90 percent of the global total, which is estimated to be 13,400.3 In addition to the United States and Russia, there are now seven more nuclear-armed nations, with smaller but still very deadly arsenals: the United Kingdom, France, China, Israel, India, Pakistan, and North Korea.

In addition, many of the dangerous policies developed over the years to justify the possession and potential use of nuclear weapons persist. For instance, the United States, Russia, France, and the UK maintain significant numbers of their nuclear weapons on prompt-launch status, ready to retaliate in response to a nuclear attack. The United States and Russia also cling to the option to use nuclear weapons first and against significant non-nuclear threats.

Making matters worse, the dialogue on disarmament has stalled. Tensions between many of the world’s nuclear-armed states are rising, and the risk of nuclear use is growing. The Trump administration has severely undermined U.S. credibility and capability to provide effective global leadership on nonproliferation and disarmament.

The world’s nine nuclear actors are squandering tens of billions of dollars each year to maintain and upgrade nuclear arsenals, monies that could be redirected to address real human needs. The United States and Russia have discarded or disrespected key agreements that have kept their nuclear competition in check, and other agreements are in jeopardy. Other nuclear-armed states, for the most part, still remain outside the nuclear risk reduction and disarmament enterprise. We are once again on the verge of a new, global nuclear arms race.

Our nuclear anxieties persist, and humanity’s efforts to contain and eliminate the nuclear weapons danger continue.

The historic 2017 Treaty on the Prohibition of Nuclear Weapons, which has won the support of the vast majority of the world’s non-nuclear states, is a step forward, but the current environment necessitates even bolder action from civil society and governments everywhere. We must reduce nuclear risks, and we must freeze, reverse, and ultimately eliminate nuclear weapons.

The survivors of the Hiroshima and Nagasaki bombings bear witness to the catastrophic humanitarian consequences of nuclear weapons. As the authors of a new 2020 appeal from a consortium of hibakusha leaders and organizations write, “The average age of the [h]ibakusha now exceeds 80. It is our strong desire to achieve a nuclear weapon-free world in our lifetime, so that succeeding generations of people will not see hell on earth ever again.”

Arms Control Today presents the following annotated photo essay to honor their call to action.


1. J. Samuel Walker, “The Decision to Use the Bomb: A Historiographical Update,” in Hiroshima in History and Memory, ed. Michael J. Hogan (Cambridge: Cambridge University Press, 1999).

2. Arjun Makhijani, “A Readiness to Harm: The Health Effects of Nuclear Weapons Complexes,” Arms Control Today, July/August 2005. See Arjun Makhijani, Howard Hu, and Katherine Yih, eds., Nuclear Wastelands: A Global Guide to Nuclear Weapons Production and Its Health and Environmental Effects (Cambridge, MA: MIT Press, 2000).

3. Hans M. Kristensen and Matt Korda, “Status of World Nuclear Forces,” Federation of American Scientists, April 2020, https://fas.org/issues/nuclear-weapons/status-world-nuclear-forces/.


The cloud generated by “Little Boy,” the uranium-based atomic bomb dropped by the United States on Hiroshima, rises above the city with a wartime population of approximately 320,000 on the morning of August 6, 1945. The blast packed a destructive force equivalent to about 15 kilotons of TNT. In minutes, approximately half of the city vanished. (Photo: Hiroshima Peace Memorial Museum)




Three days later, the city of Nagasaki burns following the decision by U.S. leaders to drop “Fat Man,” a plutonium-based bomb with an explosive yield estimated at 21 kilotons, on the city of approximately 260,000 at the time of the attack. (Photo: UN/Nagasaki International Cultural Hall)



The Hiroshima Prefectural Industrial Promotion Hall stands alone in the rubble. The explosion produced a supersonic shock wave followed by extreme winds that remained above hurricane force more than three kilometers from the hypocenter. A secondary and equally devastating reverse wind ensued, flattening and severely damaging homes and buildings several kilometers further away. Only remnants of a few reinforced structures remained.  (Photo: Hiroshima Peace Memorial Museum)



A burned body in the ruins 500 meters from the hypocenter; and the pattern of a woman’s kimono burned into her skin. The intense heat rays of the Hiroshima bomb reached several million degrees Celsius at the hypocenter and incinerated everything within approximately two kilometers. The heat scorched flesh and ignited trees and other flammable materials as far as 3.5 kilometers from ground zero. Flash burns from the primary heatwave caused most of the deaths at Hiroshima. By the end of 1945, an estimated 140,000 were killed by the blast, heat, and radiation effects of the nuclear attack. (Photo: Hiroshima Peace Memorial Museum)





The city of Hiroshima on fire on August 6, as seen from four kilometers away. A firestorm ravaged the city of Hiroshima for hours after the explosion, peaking around midday. Firestorms leveled neighborhoods where the blast had inflicted only partial damage and killed victims trapped under fallen debris. Within 20 minutes, the explosion also produced black rain laden with radioactive soot and dust that contaminated areas as far away as 29 kilometers from ground zero. (Photo: Hiroshima Peace Memorial Museum)




The ruins of Nagasaki on August 10, 1945, at about 700 meters from the hypocenter. The nuclear attack on Nagasaki killed an estimated 74,000 by the end of 1945 and injured approximately another 75,000. The attack occurred two days earlier than planned, 10 hours after the Soviets entered the war against Japan, and as Japanese leaders were contemplating surrender.  (Photo: UN/Yosuke Yamahata)




The remains of a religious temple in Nagasaki on September 24, 1945, six weeks after the bombing. Many of those who survived the Hiroshima and Nagasaki attacks would die in radiation-induced illnesses years later. The number of survivors contracting leukemia increased noticeably five to six years after the bombing. Ten years after the bombing, the survivors began contracting thyroid, breast, lung, and other cancers at higher than normal rates. These hibakusha and their descendants helped form the nucleus of the Japanese and global nuclear disarmament movement. (Photo: Galerie Bilderwelt/Getty Images)





Seventy-five years on, the effects of the bombings haunt the survivors and inform the global debate about nuclear weapons and the ongoing pursuit of nuclear disarmament.

Japan Suspends Aegis Ashore Deployment

July/August 2020

Japan will not deploy two U.S.-made Aegis Ashore ballistic missile defense systems designed to protect Japan against North Korean ballistic missiles, officials announced in June, citing growing financial costs, unresolved technical issues, and local opposition.

“Due to considerations of cost and timing, we have stopped the process of introducing the Aegis Ashore system,” said Japanese Defense Minister Taro Kono on June 15. The cost was too high, he said, to develop enough confidence that the system’s rocket booster would not fall on Japanese residents and buildings after detaching from the interceptor. Attempts to revise the missile’s software to ensure this outcome had failed, and costly hardware modifications will be necessary, Kono said. Japanese officials had proposed to site the two systems at the north and south ends of the nation’s main island, a decision met with protests from local communities and officials.

Purchasing, operating, and maintaining the two Aegis Ashore systems for 30 years had been estimated to cost about $4.2 billion, and Japan has already invested about $1.8 billion in the project, according to Japanese news sources.

With the cancellation, Japan’s missile defense capabilities will now rely solely on naval vessels armed with Aegis weapons. Japan plans to deploy eight such destroyers, the last of which began sea trials in June and is scheduled to be commissioned in 2021, Defense News reported.—MACKENZIE KNIGHT

Japan Suspends Aegis Ashore Deployment

Wassenaar Nations Set New Export Controls

April 2020

Transfers of military-grade software and chip manufacturing technology will face increased scrutiny following an amendment to the Wassenaar Arrangement, an international export control regime.

Established in 1996 and now numbering 42 nations that apply the voluntary trade restrictions, the Wassenaar Arrangement restricts the export of certain conventional weapons, dual-use goods and other technology. Its members include France, Germany, India, Japan, Russia, South Korea, and the United States. Notable nations not participating include China, Iran, Israel, and North Korea.

At their 25th annual plenary meeting in December in Vienna, members agreed unanimously to adopt new export controls in such areas as cyberwarfare software, communications monitoring, digital investigative tools and forensic systems, suborbital aerospace vehicles, technology for the production of substrates for high-end integrated circuits, hybrid machine tools, and lithography equipment and technology.

In addition, the nations clarified existing export control measures regarding ballistic protection, optical sensors, ball bearings, and inorganic fibrous and filamentary materials. They also relaxed some controls, including those with respect to certain laminates and commercial components with embedded cryptography.

The enhanced export restrictions might affect sales by forensic cybersecurity and chip manufacturing companies, according to articles from Kyodo News and Haaretz.—PERI MEYERS

Wassenaar Nations Set New Export Controls

Japan Downplays Possibility of Hosting INF-Range Missiles

Japan’s new defense minister downplayed the prospect that Japan might host U.S. intermediate-range missiles formerly banned by the Intermediate-Range Nuclear Forces (INF) Treaty.

Japanese Defense Minister Taro Kono, speaking here on Sept. 11, said that as of Oct. 31, the United States and Japan had not discussed the possibility of Japan hosting U.S. intermediate-range missiles. (Photo: Tomohiro Ohsumi/Getty Images)In an Oct. 31 interview with The Financial Times, Defense Minister Taro Kono said, “The U.S. doesn’t have non-nuclear missiles that can be deployed yet. Maybe they’re in the phase of development. We have not been discussing any of it.”

U.S. Defense Secretary Mark Esper said in August after the demise of the INF Treaty that he would like to see the deployment of U.S. conventional, ground-launched, intermediate-range missiles in Europe and Asia, ideally as soon as possible. South Korea and Australia said at the time that they were not considering such a deployment.

Meanwhile, Russian Foreign Minister Sergey Lavrov in November continued to rebuke the Trump administration for “dismantling” the treaty, saying that “our American colleagues were only engaged in searching for pretexts to get rid of the INF Treaty.” He also stated that Moscow will not deploy ground-launched, intermediate-range missiles until the United States does.

The Pentagon has stated that it would conduct a test of a ground-launched ballistic missile with a range of about 3,000 to 4,000 kilometers by the end of the year, but the test does not appear to have taken place yet. On Aug. 18, the United States flight-tested a ground-launched cruise missile that would have been prohibited by the INF Treaty.

Signed in 1987, the INF Treaty led to the elimination of 2,692 U.S. and Soviet nuclear and conventional ground-launched ballistic and cruise missiles having ranges between 500 and 5,500 kilometers.—SHANNON BUGOS

Japan Downplays Possibility of Hosting INF-Range Missiles

A Message from the Mayors of Hiroshima and Nagasaki

This year, on August 6 and August 9, the world will mark 75 years since the atomic bombings of Hiroshima and Nagasaki. As survivors of the bombing, the hibakusha , decrease in number, listening to them grows ever more crucial. As a human family, we must not forget the tragedy of those two cities. Instead, we must ensure that future generations know the devastation wrought by nuclear weapons and are inspired to act to eliminate the threat of nuclear weapons. Now is the time for civil society and world leaders to renew our resolve to ensure the deep humanitarian conviction of the hibakusha that...


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