Nihon Hidankyo

Biographical Overview & Key Facts

Subject:

Nihon Hidankyo

Role / Field:

Japanese organization representing atomic bomb survivors advocating for nuclear disarmament.

Database Source:

2Day Chrono-Wiki & Wikipedia CC BY-SA 4.0

Origins & Early Life

The Japan Confederation of A- and H-Bomb Sufferers Organizations, often shortened to Nihon Hidankyō (日本被団協, Nihon Hidankyō), is a group that represents survivors (known as hibakusha) of the atomic bombings of Hiroshima and Nagasaki. Nihon Hidankyō lobbies both the Japanese government for improved support of the victims and governments worldwide for the abolition of nuclear weapons. Their activities included recording thousands of witness accounts, issuing resolutions and public appeals, and sending annual delegations to various international organisations, including the United Nations, to advocate for global nuclear disarmament. The organisation was awarded the 2024 Nobel Peace Prize "for its efforts to achieve a world free of nuclear weapons and for demonstrating through witness testimony that nuclear weapons must never be used again". Nihon Hidankyo is a nation-wide organisation formed by survivor groups of atomic bomb victims from Hiroshima and Nagasaki in each prefecture.

Pivotal Works & Achievements

The fallout from Castle Bravo, a thermonuclear weapon test conducted at Bikini Atoll by the United States in 1954, caused acute radiation syndrome in residents of neighbouring atolls and 23 crew members of the Japanese fishing vessel Daigo Fukuryū Maru. This led to the formation of the Japan Council against Atomic and Hydrogen Bombs in Hiroshima the following year. Inspired and supported by this movement, atomic bomb survivors established Nihon Hidankyo on 10 August 1956, at the second annual conference of the council in Nagasaki. However, the movement's solidarity was jeopardised when the council became actively involved in the anti-U.S.-Japan Security Treaty movement alongside the left-leaning Japan Socialist Party in 1959. A large number of supporters withdrew from the council, and with the support of the conservative Liberal Democrats, a new organisation, led by Masatoshi Matsushita, leader of the staunchly anti-communist Democratic Socialist Party, was established.

Enduring Legacy & Impact

In 1961, when the Soviet Union resumed nuclear tests, the communist wing of the council refused to denounce them, which led to severe internal tension. This led to a further split in the movement, with a Japan Socialist Party-backed group that denounces nuclear tests by any nation breaking away as a new council. These tensions within anti-nuclear movements caused some prefectural Hidankyos to split at the local level as well, such as in Hiroshima, where there are both Socialist Party-backed and Communist Party-backed Hidankyos with the same name. The nationwide organisation itself decided not to align with any political movements in 1965, after they became highly politicised. As of October 2024, Nihon Hidankyo's activities include: Advocacy for the abolition of nuclear weapons and demands for state compensations Petitioning actions towards the Japanese government, the United Nations and other governments Elimination and removal of nuclear weapons, establishment of an international treaty for nuclear disarmament, holding of international conferences, enactment of non-nuclear laws and enhancement of hibakusha support measures Raising awareness of the realities of the atomic bombings both domestically and internationally Research, study, publication, exhibitions and gatherings on atomic bomb damage Consultation and support activities for hibakusha Terumi Tanaka: Exposed to radiation 3.2 km away from the Nagasaki hypocentre at the age of 13; assumed office on 14 June 2017 Shigemitsu Tanaka: Exposed to radiation 6 km away from the Nagasaki hypocentre at the age of 4; assumed office on 14 June 2018 Toshiyuki Mimaki: Exposed to radiation at his home in Hiroshima at the age of 3; assumed office on 9 June 2022 Sueichi Kido: Exposed to radiation in Nagasaki at the age of 5; assumed office on 7 June 2017 Toshiko Hamanaka Jiro Hamasumi Michiko Kodama Masako Wada Ichiro Moritaki: Founding chairperson of Nihon Hidankyo.

Chronological Milestones & Life Events

1. 1954: 1954 Milestone — The fallout from Castle Bravo, a thermonuclear weapon test conducted at Bikini Atoll by the United States in 1954, caused acute radiation syndrome in residents of neighbouring atolls and 23 crew members of the Japanese fishing vessel Daigo Fukuryū Maru.
2. 1956: 1956 Milestone — Inspired and supported by this movement, atomic bomb survivors established Nihon Hidankyo on 10 August 1956, at the second annual conference of the council in Nagasaki.
3. 1959: 1959 Milestone — -Japan Security Treaty movement alongside the left-leaning Japan Socialist Party in 1959.
4. 1961: 1961 Milestone — In 1961, when the Soviet Union resumed nuclear tests, the communist wing of the council refused to denounce them, which led to severe internal tension.
5. 1965: 1965 Milestone — The nationwide organisation itself decided not to align with any political movements in 1965, after they became highly politicised.
6. 2017: 2017 Milestone — 2 km away from the Nagasaki hypocentre at the age of 13; assumed office on 14 June 2017 Shigemitsu Tanaka: Exposed to radiation 6 km away from the Nagasaki hypocentre at the age of 4; assumed office on 14 June 2018 Toshiyuki Mimaki: Exposed to radiation at his home in Hiroshima at the age of 3; assumed office on 9 June 2022 Sueichi Kido: Exposed to radiation in Nagasaki at the age of 5; assumed office on 7 June 2017 Toshiko Hamanaka Jiro Hamasumi Michiko Kodama Masako Wada Ichiro Moritaki: Founding chairperson of Nihon Hidankyo.
7. 2024: 2024 Milestone — The organisation was awarded the 2024 Nobel Peace Prize "for its efforts to achieve a world free of nuclear weapons and for demonstrating through witness testimony that nuclear weapons must never be used again".

Historical Fact-Check Quiz: Nihon Hidankyo

True or False: “The Nobel Peace Prize awarded to Nihon Hidankyō in 2024 was solely based on their domestic lobbying efforts within Japan.”

Answer (FALSE ❌): The award recognized both their global advocacy and the demonstration through witness testimony that nuclear weapons must never be used again.

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Frequently Asked Questions about Nihon Hidankyo