Nuclear Abolition Day Appeal Extended for 2026

September 26 has been declared by the UN General Assembly as the International Day for the Total Abolition of Nuclear Weapons (Nuclear Abolition Day). Every year on this date, the UN holds a high-level meeting of world leaders to discuss “urgent and effective measures” to achieve global nuclear disarmament. At the same time, civil society organizations organize events and undertake actions to support nuclear weapons abolition.

In 2025, for the first time, civil society organizations from around the world joined together to

establish a common platform and joint activities for Nuclear Abolition Day. The main activities were a social media action Stop Nuclear Weapons: Peace is in our Hands and a Joint Appeal that was endorsed by over 600 organizations and more than 1200 additional individuals from 99 countries. The Joint Appeal was presented to the high-level plenary on September 26 and to the UN First Committee (Disarmament and International Security) on October 17.

The platform also publicised commemorative events organized for Nuclear Abolition Day, and circulated quotes from appeal endorsers.

This civil society cooperation was so successful that the Nuclear Abolition Day core team has

decided to repeat the actions in 2026. The Joint Appeal has been re-opened for endorsement, with the plan to present it to the NPT Review Conference in April and again to the UN High-Level Meeting in September.

We encourage those who have not already endorsed the appeal to do so, and for those who

have endorsed to circulate this notice to colleagues inviting them to endorse.

Please click here for a full report of NuclearAbolitionDay 2025.