PARIS — All week President Emmanuel Macron toured France’s World War I memory trail. He visited the killing fields of Verdun, the vast ossuary at Douaumont and the monument to heroic African soldiers at Reims. Each stop made the same solemn point: Nationalism kills.

It is a message Mr. Macron hopes will not be lost on the dozens of world leaders who will descend on France this weekend to commemorate the 1918 Armistice.

But it is not clear anyone is listening. If anything, the carefully orchestrated centennial that Mr. Macron wanted to use for boosting his image at home and his ambitions for Europe only seems certain to underscore his isolation, both at home and abroad.

The partner he had hoped to have in realizing his ambition for ‘‘more Europe’’ — the German chancellor, Angela Merkel — is on her way out. The avidly nativist eastern Europeans see him as the symbol of everything that is wrong with the European Union. He extended a hand time and again to President Trump only to see it slapped away; in the last few months, Mr. Macron has increasingly been marking his distance from the American president.