The Treaty on Prohibition of Nuclear Weapons (TPNW) was adopted on July 7, the last day of the United Nations Conference to Negotiate a Legally Binding Instrument to Prohibit Nuclear Weapons, Leading towards Their Elimination, with 122 in favor, one against (the Netherlands) and one abstention (Singapore).

What is TPNW?

TPNW is the international treaty to eliminate nuclear weapons. There are also international treaties for nuclear weapons including NPT (Nuclear Non-Proliferation Treaty) and CTBT (Comprehensive Nuclear-Test-Ban Treaty).

About TPNW

Status of Signatory/ Ratification

As of end of June, 2020, 81 states have signed and 38 states have ratified. The treaty enters into force after 50 states have ratified or acceded to it. Thus, the treaty has not entered into force yet. 

The latest status of TPNW

Initiative by Hiroshima Prefecture

We believe that TPNW is the one of the most effective way to realize the peaceful international community free from nuclear weapons. If the treaty will enter into force, there will be a huge step to realize the world without nuclear weapons. Thus, we request Japanese government to sign and ratify the treaty.

Columns about TPNW

On Hiroshima Report 2018, the columns about TPNW by experts of nuclear  disarmament were posted. How did the experts evaluate the TPNW? 

*The position was as of the time that the report was released.

• Dr. Mahmoud Karem, Former Ambassador of Egypt to Japan

Treaty on the Prohibition of Nuclear Weapons and Future of Nuclear Disarmament

• Mr. Tim Caughley, Senior Fellow, United Nations Institute for Disarmament Research (UNIDIR)

A Personal Evaluation of the Treaty Prohibiting Nuclear Weapons (TPNW), and Possible Pathways to Move Nuclear Disarmament Forward Following the Adoption of the TPNW

• Mr. Yasuyoshi Komizo, Chairperson, Hiroshima Peace Culture Foundation

The Treaty on the Prohibition of Nuclear Weapons and the Future of Nuclear Disarmament

• Dr. Masahiko Asada, Professor, Graduate School of Law, Kyoto University

The TPNW and the Future of the Nuclear Non-Proliferation and Disarmament Regime

• Mr. Anton Khlopkov, Director, Center for Energy and Security Studies (CENESS)

Treaty on the Prohibition of Nuclear Weapons and the Future of Nuclear Disarmament