All four international airports around Moscow temporarily suspended flights Tuesday as Russian forces intercepted more than 100 Ukrainian drones fired at almost a dozen Russian regions, the Defense Ministry in Moscow said.

Russia says Ukraine launched a drone attack on Moscow - days before the start of a ceasefire, ordered by Russian President Vladimir Putin to coincide with a World War Two parade. Moscow's four major airports shut for a few hours on Tuesday amid the barrage, authorities said. There were no casualties and Ukraine has not commented.

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.