These are 6 of Russia's deadliest moments in the Ukraine war

A destroyed Russian tank in Bucha, Ukraine, on April 16, 2022.Nils Petter Nilsson/Getty Images

• Russia is believed to have lost around 300,000 soldiers during the war in Ukraine.
• Some Ukrainian strikes have been particularly deadly for Russia, killing dozens of soldiers at once.

The 20 months of war in Ukraine have been brutal and costly for both sides, but particularly so for the invading Russian forces.

Russians typically outnumber Ukrainians on the battlefield by almost three to one, according to The New York Times, and Ukraine has used weapons such as the US-supplied High Mobility Artillery Rocket System (HIMARS) to inflict high casualties on Russian troops.

Russia has never confirmed the numbers of its losses, but Western estimates suggest that approximately 300,000 Russian troops have been killed or wounded in Ukraine. Ukrainian casualties are believed to be around 200,000.

Reports say Russia has been hemorrhaging men and weapons in its most significant attack against Ukraine in recent months to capture Avdiivka, a strategic town in eastern Ukraine that acts as a gateway to Russia-occupied Ukraine.

Despite high Russian losses, the country's population is around three times as large as Ukraine's, and therefore has a large pool to keep replenishing its ranks.

These are believed to be some of the deadliest single moments for Russia in the conflict so far.