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US president Donald Trump has said he will withdraw the US from the historic Paris climate accord, facing a blowout in global efforts to slow global warming after the hottest year on record.

The move was announced on Monday after Trump took the oath of office, replacing Joe Biden as US president.

“President Trump will withdraw from the Paris climate accord,” the White House said in an email listing the new administration’s priorities less than half an hour after the new president took office.

America’s exit from the 2015 deal, which was signed by nearly 200 countries, means that the world’s largest historical polluter will once again walk away from its commitment to curb greenhouse gas emissions.

Rachel Cleetus, policy director of the Union of Concerned Scientists, said the US withdrawal was “a travesty” and “clearly at odds with the facts of science”.

In his inaugural speech, Trump said he would seek to tap the largest oil and gas reserves in the US.

The US was the only country to leave the Paris agreement, under the first Trump administration in 2017. But it rejoined under Biden in 2021. Former Brazilian president Jair Bolsonaro has also threatened to withdraw from of the agreement, but did not comply.

This is a developing story