Russia and Ukraine reportedly exchanged intense attacks Thursday amid growing uncertainty over whether rival cease-fire proposals announced by the two sides could hold.
The Russian Defense Ministry said 347 drones were intercepted overnight, one of the highest tallies in the four-year war. It said almost all regions in western and central Russia were affected.
Moscow Mayor Sergei Sobyanin reported on Telegram that 11 drones were shot down as they approached the capital.
The city is due to host the annual Victory Day celebration commemorating the Soviet Union's victory over Nazi Germany on May 9.
Ahead of the anniversary, Russia announced a temporary two-day cease-fire covering Friday and Saturday.
