Meeting Again in Paris, European Leaders Try to Recalibrate After Trump Sides With Russia

President Emmanuel Macron of France called a second emergency meeting of European allies on Wednesday seeking to recalibrate relations with the United States as President Trump upends international politics by rapidly changing American alliances.

Mr. Macron had already assembled a dozen European leaders in Paris on Monday after Mr. Trump and his new team angered and confused America’s traditional allies by suggesting that the United States would rapidly retreat from its security role in Europe and planned to proceed with peace talks with Russia — without Europe or Ukraine at the table.

Mr. Trump’s remarks late on Tuesday, when he sided fully with Russia’s narrative blaming Ukraine for the war, have now fortified the impression that the United States is prepared to abandon its role as a European ally and switch sides to embrace President Vladimir V. Putin of Russia.

It was a complete reversal of historical alliances that left many in Europe stunned and fearful.

“What’s happening is very bad. It’s a reversal of the state of the world since 1945,” Jean- Yves Le Drian, a former French foreign minister, said on French radio Wednesday morning.