Kyiv warned that Ukraine could not guarantee the safety of foreign delegations and world leaders travelling to Moscow to attend the Victory Day parade.

Russia's three-day ceasefire in Ukraine is due to begin on Thursday, but Zelensky has dismissed the proposed truce as a "theatrical play".

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.