The casualty toll accounts for nearly 80 percent of the personnel Russia had when the conflict began, Reuters reported, citing a source familiar with the intelligence on Tuesday.
The report also assessed that Moscow's losses in personnel and armored vehicles to Ukraine's military have set back Russia’s military modernization by 18 years, the source said, according to Reuters.
According to Kyiv's military, around 341,500 Russian troops have been killed in Ukraine since Vladimir Putin invaded the country in February last year.
On Tuesday alone, Ukrainian forces killed 850 Russian soldiers, according to the General Staff of the Armed Forces of Ukraine.
A top British military official said in the summer that "Russia has lost nearly half the combat effectiveness of its army" since invading Ukraine in February last year.
Russia invaded Ukraine on February 24, 2022, launching the largest military conflict in Europe since World War II.
Wednesday is day 658 of Russia’s war on Ukraine
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Source: PAP, Reuters, ukrinform.net