Daniel Boffey in Brussels
Wednesday 28 June 2017 11.13 BST
Mayors of more than 7,400 cities across the world have vowed that Donald Trump’s decision to withdraw from the Paris accord will spur greater local efforts to combat climate change.
Cities will devise a standard measurement of emission reductions to help them monitor their progress. They will also share ideas for delivering carbon-free transport and housing.
Kassim Reed, the mayor of Atlanta, told reporters he had travelled to Europe to “send a signal” that US states and cities would execute the policies Obama committed to, whether the current White House occupants agreed or not.
“Right now you have a level of collaboration and focus and sharing of best practices that I haven’t seen. I came from Brussels from a meeting of the US conference of mayors … and more than 300 mayors signed a letter reflecting our will to deliver the Paris accord commitments.”
He added: “My firm belief is that President Trump’s disappointing decision to withdraw from the agreement will actually have the opposite effect in terms of execution.