London Mayor Sadiq Khan on Wednesday congratulated Zohran Mamdani on his win in New York City's mayoral election race describing his victory as a "win for hope over fear”.

Speaking in Rio de Janeiro, where he joined mayors from around the world pledging coordinated climate action ahead of COP30, Khan said Mamdani’s triumph reflected the values of unity and progress shared by major global cities.

“I want to congratulate Zohran, his family, and the city of New York,” Khan said.

“They had a clear choice at this election — they chose hope over fear, unity over division.”

Khan also drew parallels between London and New York, calling both cities “liberal, progressive, multicultural, and successful,” while taking aim at former U.S. President Donald Trump.

AP video shot by: Mario Lobão