Despite a promise of a fresh truce over the coming days, Ukraine's President Volodymyr Zelensky called the measure "pointless". Instead, offering an unconditional ceasefire over at least 30 days in line with a U.S. proposal launched in March.

Ukrainian drones attacked Moscow for the second consecutive night halting flights at four airports, Russian officials said, as the city prepares to host a major military parade expected to be attended by world leaders including China’s Xi Jinping.

A Ukrainian drone attack forced Moscow to close its airports for several hours, Russian officials said on Tuesday, before President Vladimir Putin will host several leaders to celebrate the 80th anniversary of the defeat of Nazi Germany.