Russia is reporting that it has shot down hundreds of Ukrainian drones in a massive overnight attack across its regions and Crimea.

Officials say Ukrainian drones have struck one of Russia’s largest oil refineries and sparked a fire.

Russian President Vladimir Putin has proposed putting Ukraine under external governance under the auspices of the U.N. as part of efforts to reach a peaceful settlement.

Russian-installed officials in the eastern city of Donetsk say at least 27 people have been killed in the shelling by Ukraine of a market.