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

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.

In Ukraine, a Russian missile attack on the city of Sumy Tuesday killed three people, including a child. At least 10 others were wounded in the attack, most of them children. The strike came as Ukraine launched a third consecutive night of drone attacks on Moscow,