Russian air defence forces downed two Ukrainian drones flying towards Moscow, the city's mayor, Sergei Sobyanin, said on Wednesday.

Aeroflot said “temporary restrictions” were introduced at Moscow Sheremetyevo, while reports suggest flights at other Russian airports have been diverted.

The fighting comes a day ahead of a planned parade in the Russian capital to mark the 80th anniversary of the end of World War Two - with President Vladimir Putin proposing a three-day ceasefire to coincide with the event. Ukraine has not agreed to the proposal and has pushed for a truce lasting at least 30 days.