U.S. President Donald Trump and Russian President Vladimir Putin indicated they would not attend what could be the first direct peace talks between Moscow and Kyiv in three years on Thursday, with the Kremlin sending instead a group of experienced technocrats.

After Mr. Trump expressed frustration with Russia’s refusal to stop the war, Mr. Putin ordered a three-day cease-fire to begin on May 8, in order to mark the May 9 celebration of the Soviet Union’s victory over Nazi Germany in World War II. Mr. Zelensky described that pledge as a “ manipulation .”