Multilateral agreements in nuclear energy

II. Non-proliferation and nuclear security

Treaty on the Prohibition of Nuclear Weapons (TPNW or Nuclear Weapon Ban Treaty)

Aims to prohibit all nuclear weapon activities, including the development, testing, production, acquisition, possession, stockpiling, use, or threats to use nuclear weapons.

Adopted: 7 July 2017

Opened for signature: 20 September 2017

Entered into force: Not yet in force

Signatures: 59

Ratifications: 14 (see table below)

More information, including the text of the Treaty on the Prohibition of Nuclear Weapons is available here.

The current status of the Treaty on the Prohibition of Nuclear Weapons is available here.

Contracting Parties to the Treaty on the Prohibition of Nuclear Weapons

Austria Holy See Palau Venezuela
Costa Rica Mexico* Palestinian Authority Viet Nam
Cuba New Zealand Thailand  
Guyana Nicaragua Uruguay  

* Country with at least one nuclear power plant in operation.


Last reviewed: 10 August 2018

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