Ukraine's Volodymyr Zelenskyy and top European leaders are in Washington for make-or-break meetings with President Trump over the Russian invasion.

For Europe’s leaders, the White House meeting was about optics as much as substance: A chance to undo any ground Russia's Vladimir Putin may have gained with Trump in Alaska.

It remained cordial throughout. It was a remarkably different mood in the Oval Office than the last time Volodymyr Zelenskyy visited – when the Ukrainian leader faced a verbal tirade from ...