Zelenskyy told Bloomberg Monday the U.S.-led peace plans require further discussions on “sensitive issues.” There is no “unified view” on Donbas, the eastern Ukrainian region, he said.

“There is one question I — and all Ukrainians — want to get an answer to: if Russia again starts the war, what will our partners do?,” he added.

Donald Trump on Sunday said he was a “little bit disappointed that President Zelenskyy hasn’t yet read the proposal,” claiming “his people love it.” The U.S. president also suggested Russia “is fine with it.”

His eldest son, Donald Trump Jr., also suggested Sunday his father may walk away from Ukraine if it doesn’t make peace with Russia.

Following the meeting an Elysée spokesperson said the E3 leaders would continue to work together “with a view to discussions between Europeans, Americans and Ukrainians, which should enable greater convergence in the coming days.”

They added that at the same time Europeans would “step up” work on providing security guarantees and planning for reconstruction.

Esther Webber, Emilio Casalicchio and Sam Blewett contributed reporting from London, and Clea Caulcutt contributed from Paris.

This story has been updated to include details of the meeting.