An average of around 1,500 Russian soldiers were killed or injured per day in October -- Russia's worst month for casualties since the beginning of the invasion, according to Britain's Chief of the Defense Staff Tony Radakin.
"Russia is about to suffer 700,000 people killed or wounded -- the enormous pain and suffering that the Russian nation is having to bear because of [President Vladimir] Putin's ambition," Radakin told the BBC on November 10.
Moscow does not reveal the number of its war casualties.
Radakin claimed Moscow was spending more than 40 percent of public expenditure on defense and security, putting "an enormous strain" on the country.
Meanwhile, the Russian Defense Ministry claimed on November 10 that its forces had captured the town of Voltchenka in Ukraine's eastern Donetsk region, where Russian forces have been making advances in recent weeks.
Ukraine launched dozens of drones targeting Moscow, forcing the temporary closure of three of the capital's airports, Russian officials said on November 10.
Rosaviatsia, Russia's federal air transport agency, said the Sheremetyevo, Domodedovo, and Zhukovo airports halted operations for several hours amid the drone strikes, one of Kyiv's largest attacks on Moscow since the war began in February 2022.
The strikes come as Russia fired 145 drones at Ukraine overnight, the most in any single nighttime attack of the conflict so far, Ukrainian President Volodymyr Zelenskiy said on November 10.
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Ukraine's air force said its air defense downed 62 of the Russian drones launched overnight, while a further 67 had disappeared from radar screens. Other drones had flown into the airspace of Belarus or Moldova, Ukraine's neighbors to the north and west, respectively.
At least two people were injured and buildings were damaged in the attack in southern region of Odesa, Ukrainian officials said.
Moscow Mayor Sergei Sobyanin said Russia had downed 32 Ukrainian drones targeting Moscow overnight and in the morning of November 10.
There was no damage or casualties at the site of the fall of the debris, Sobyanin said, adding emergency services were at the site.
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'Life Or Death': Drones Deliver Supplies To Ukraine's Front Line (Video)
One person was injured in the attack, according to Moscow regional Governor Andrei Vorobyov. Media reports said the strikes caused a fire in the Ramenskoye district, with several houses in flames.
Russia reports the destruction of Ukrainian drones almost daily, but the attacks rarely target the capital.
Ukrainian authorities have maintained their drone attacks on Russia are aimed at infrastructure key to Moscow's war efforts and are in response to Russia's continued attacks on Ukraine.
Since the war began, Ukraine has been subject to nightly Russian air raids targeting critical energy infrastructure, among other things.
Ukrainian drones also targeted Russia’s Bryansk and Kaluga regions overnight, setting several nonresidential buildings on fire, regional governors reported on November 10.
A nonresidential building in Kaluga was on fire as result of Ukraine's drone attack, according to the regional governor Vladislav Shapsha. Kaluga borders the Moscow region to its northeast.