Canadian Prime Minister Justin Trudeau has warned that a victory for Republican front-runner Donald Trump in the 2024 U.S. presidential election could damage global efforts to tackle climate change.In an interview aired Friday, Trudeau expressed concerns over Trumps climate policies, noting the Republican recently vowed to withdraw a $3 billion U.S. pledge to a fund assisting developing nations emission cuts if elected.Attacking the Biden administrations renewable energy investments has been a core theme of Trumps latest campaign.Yes, theres a concern particularly around the environment at a time where its so important to move forward on protecting and building an economy of the future, Trudeau told the Canadian Broadcasting Corporation.A Trump presidency that goes back on the fight against climate change would slow down the worlds progress in ways that are concerning to me, he continued, describing Trumps climate approach while in office as a menace not just to Canada but to the world.Bidens Inflation Reduction Act, outlining massive green transition investments, recently prompted Canada to spend billions attracting major automakers to manufacture electric vehicles and batteries domestically.Trudeau had a turbulent relationship with Trump, who once called him dishonest and weak. The prime minister was among the first world leaders to congratulate Biden on his 2020 election victory.