Ukrainian drones attacked Moscow for the second consecutive night temporarily 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.

Authorities say attacks by Ukrainian long-range drones have caused flight disruption at Moscow’s main airports for a third straight day.

The volley came just days before a planned parade in the capital to mark the 80th anniversary of the end of World War II in Europe.