It was the second seismic moment in US politics in just over a week, following the assassination attempt against former president Donald Trump at a Pennsylvania rally on July 13, which saw global leaders rally around him as the Republican nominee.

Pressure had mounted on Biden to pull out of the race since his disastrous performance at the CNN presidential debate last month, and on Sunday, he confirmed he would remain a one-term president, prompting a flood of tributes from US allies who thanked him for his leadership.

British Prime Minister Keir Starmer, who met with Biden this month in Washington, said he respects the president’s decision and looks forward to working together for the remainder of his term.

“I know that, as he has done throughout his remarkable career, he will have made his decision based on what he believes is best for the American people,” Starmer wrote on X.

Canadian Prime Minister Justin Trudeau thanked Biden for being a “true friend” to his country. “He’s a great man, and everything he does is guided by his love for his country,” he said on X.

“President Biden has dedicated his life to public service, and that is something that deserves much respect,” New Zealand Prime Minister Christopher Luxon said on X.

Ukrainian President Volodymyr Zelensky thanked Biden for his “unwavering support” in his country’s war against Russia, which the US has backed with weapons, military aid and diplomatic support, despite backlash from Republicans.

“Many strong decisions have been made in recent years and they will be remembered as bold steps taken by President Biden in response to challenging times,” Zelensky said on X. “We will always be thankful for President Biden’s leadership.”

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