"The next action should be on the day of the vote, we are waiting for the exact date and will decide on the spot," he said to his more than a million and a half followers.

In its war against autocratic, imperialist Russia, Ukraine is fighting for the future of European liberal democracy, as Martin Wolf wrote powerfully this week.

"I hope Zelenskyy will continue to show transparency and anti-corruption commitment. His credibility and support depend on it," Blumenthal said.