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 .”

The talks took place in the warring capitals of Moscow and Kyiv, from Washington and Riyadh, Saudi Arabia, to countries across Europe.

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