WASHINGTON: NATO’s 75th anniversary summit was meant to showcase the triumph of a larger, stronger alliance. Instead, leaders are coming together in Washington in the shadow of setbacks in Ukraine and electoral headwinds on both sides of the Atlantic.

US President Joe Biden, fighting for his political life after a disastrous debate against NATO skeptic Donald Trump, will turn his attention away from campaigning to welcome leaders of the 32-nation transatlantic alliance for three days from Tuesday.

Biden has also invited the leaders of Australia, Japan, New Zealand and South Korea, a sign of NATO’s growing role in Asia in the face of a rising China.

But the star of the summit is set to be Ukrainian President Volodymyr Zelensky, who is looking for firm signs of support although NATO will not be extending his country an invitation to join.

Founded in 1949 to provide collective defense against the Soviet Union, NATO returned in some ways to its original mission when allies rallied to Ukraine’s defense after it was invaded by Russia in 2022.

Ukrainians heartened most of the West by repelling Russia in its push for a quick victory. But Moscow’s troops have been grinding on, making advances in the east.

A European official acknowledged the mood ahead of the NATO summit has become “gloomy” with Ukraine slipping on a fragile frontline.

“This summit will be very different from the initial plans because it is happening at a critical juncture for European security,” the official said on condition of anonymity.

“Russia is today in a situation which is quite comfortable. They think they can simply wait it out,” he said.

Max Bergmann, director of the Europe, Russia and Eurasia program at the Center for Strategic and International Studies, said the summit comes at “the best of times, and the worst of times.”

“The best of times, in the sense that the alliance knows what it’s about — deterring Russia. Alliance members are spending more,” he said.

“But it’s also sort of the worst of times — obviously because of the war in Ukraine, challenges of ramping up European defense spending, concerns about the reliability of the United States.”

Trump, who has voiced admiration in the past for Russian strongman Vladimir Putin, has long criticized NATO as an unfair burden on the United States, which spends far more than any other ally.

The 2024 Republican presidential candidate — whose first term was marked by an impeachment over his strong-arming of Zelensky — has insisted he can stop the war, with his advisors floating the possibility of conditioning future US assistance on Ukraine entering negotiations to surrender territory.

Trump has enjoyed a narrow lead against Biden in recent polls. Meanwhile France — where President Emmanuel Macron has mulled sending troops to Ukraine — is also facing a political shift with the strong gains in legislative elections by the far-right, which is historically close to Russia.