U.S. President Donald Trump says he has called Russian President Vladimir Putin and begun to arrange a meeting between Putin and Ukrainian President Volodymyr Zelenskyy, a critical step toward bringing a possible end to Russia's war on Ukraine.

Trump made the announcement after a day of talks with Ukraine's Volodymyr Zelenskyy and a delegation of top European officials. He said he'd meet with the two leaders afterward, but did not say when.