PARIS — French President Emmanuel Macron said Friday that a coalition of countries has agreed to send military trainers to Ukraine, suggesting that plans could come together in the coming days but not offering concrete details.

The comment, made in a news conference with Ukrainian President Volodymyr Zelensky, is the latest sign that France and other allies may now be willing to put NATO country troops on Ukrainian soil — an idea that some allies, including the United States, have long considered potentially escalatory.