The Treaty on the Prohibition of Nuclear Weapons (TPNW), which was adopted in 2017 and entered into force in 2021, is a ground-breaking legal instrument that outlaws the possession, development, testing, use and threat of use of nuclear weapons among other things. It’s also the first international law related to nuclear weapons that acknowledges disproportionate harm to Indigenous Peoples and gendered harms of nuclear weapons. It also includes provisions on victim assistance and environmental remediation.
WILPF was involved in the Treaty’s development and now its implementation, including through the intersessional work on gender—check out our briefing paper on Gender, Feminism, Intersectionality, and the TPNW.
WILPF will be actively participating in the Second Meeting of States Parties (2MSP), including members from various Sections as well as the Reaching Critical Will team. Among other things, 2MSP will hear updates from intersessional working groups about the implementation of the Action Plan adopted at 1MSP, and set the course for future work on the Treaty. It will also adopt a Declaration and encourage new countries to join the TPNW. During the meeting, Reaching Critical Will is going to be posting documents and statements online, and will also provide reporting and analysis of discussions through the Nuclear Ban Daily—subscribe now to receive updates and check out the preview edition now!

For details about side events at 2MSP, please see the International Campaign to Abolish Nuclear Weapons (ICAN), which is the civil society coordinator for this meeting.
Join the action to eliminate nuclear weapons
You don’t need to attend 2MSP to help end nuclear weapons! Here are some actions you can take wherever you are in the world:
- Hold a local action supporting the TPNW
- Call on your government to join the Treaty on the Prohibition of Nuclear Weapons (TPNW), which prohibits all nuclear testing as well as the development, possession, and use of nuclear weapons, and all other related activities
- Demand that nuclear-armed states immediately cease their nuclear weapon modernisation programmes and redirect that money towards nuclear disarmament, decommissioning and clean-up of nuclear sites, and a just transition for workers to socially and ecologically safe industries, among other things
- Join the International Campaign to Abolish Nuclear Weapons
- Urge your local city or town council to join the ICAN Cities Appeal in support of the TPNW
- Ask your parliamentarians, senators, or congressional representatives to sign the ICAN Parliamentary Pledge and work for nuclear disarmament
- Get involved in ICAN’s Don’t Bank on the Bomb initiative to remove your money from nuclear weapons and compel your bank, pension fund, or financial institution to stop funding nuclear weapon production; and
- Find out if the universities in your area are helping to build nuclear weapons and campaign to end those contracts.
Further Resources
- Banning the Bomb, Smashing the Patriarchy
- Gender, Feminism, Intersectionality, and the TPNW
- Notes on Nuclear Weapons and Intersectionality in Theory and Practice
- What Do Feminists Think of Nuclear Weapons?
- WILPF Stories of Feminist Peace 2020: Feminists for Nuclear Disarmament
- Don’t Normalise Nuclear Weapons and War—Abolish Them