Action Campaign

Cities for a fossil fuel treaty

February 16, 2026

Campaign Overview

Cities are on the frontlines of the climate emergency. For some, this means more heatwaves and shorter cold seasons while those closer to the equator will face wetter rainy seasons and hotter dry seasons. Sea level rise threatens most coastal cities.

These life-threatening changes are happening now. In response, cities and sub-national governments around the world are making bold moves to phase out the leading cause of the climate crisis: fossil fuels.

Campaign Toolkit

Learn more at https://fossilfueltreaty.org/cities

Just as nuclear-free cities played a critical role in building momentum towards a treaty banning weapons of mass destruction, now councils around the world are uniting to call for a Fossil Fuel Non-Proliferation Treaty.

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