TALLINN, June 9 -- The real question Volodymyr Zelensky brought to Estonia on Tuesday was not whether Europe wants to be involved in ending the war. It is whether Europe will demand a seat at the table before anyone else decides the terms. Speaking beside Estonian President Alar Karis at Kadriorg Palace, the Ukrainian president put the condition plainly: a ceasefire requires Russia, Ukraine, the United States, and European leaders all in the same room. Any arrangement that excludes the continent, he said, is not a durable one.

"Europe needs to be part of these negotiations with a real and strong voice in the decision-making processes," Zelensky said, according to Anadolu Agency. He had spent the previous day on a call with U.S. President...