Ukraine claims to have destroyed nearly an entire Russian army in Izyum

• Ukraine claimed to have almost destroyed Russia's 35th Combined Arms Army in Izyum.
• A Russian military blogger claimed that the 64th and 38th Separate Guard Motor Rifle Brigades suffered heavy losses.

Ukraine claimed to have almost entirely obliterated Russia's 35th Combined Arms Army in Izyum, a Ukrainian city in the Kharkiv Oblast.

Ukrainian presidential adviser Andriy Yermak made the claim in a post on his official Telegram channel on Friday.

In a recent report assessing the Russian invasion, the United States-based think tank The Institute for the Study of War cited a Russian military blogger who appeared to corroborate the claims.

The blogger, who writes under the pseudonym Boytsovyi Kot Murz, claimed Russian commanders did not account for combat challenges in the Izyum woods, which led to significant losses across several brigades.

He claimed that the 64th and 38th Separate Guard Motor Rifle Brigades, which are part of the 35th Combined Arms Army, suffered major losses, and now have less than 100 servicemen in total.

Insider has not been able to independently verify the claims.

The blogger further claimed that Russian commanders did not provide the units with the equipment needed to fight in the woods and did not repair artillery quickly enough.

The military blogger also claimed that the units suffered from a lack of encrypted communication devices, which has been a well-documented issue facing Russian military forces throughout the war.

This lack of communication with command centers meant that Ukrainian forces were able to strike Russian positions with drones, the blogger claimed.

Izyum has been occupied by Russian forces since April, according to reports.

Ukraine's prosecutor general, Iryna Venediktova, previously alleged that Vasyl Lytvynenko, the 30-year-old commander of 64th Motorized Rifle Brigade, had ordered his soldiers to kill civilians in the Bucha district near Kyiv.

In a Facebook post, Venediktova shared a photograph of Lytvynenko and said he was "responsible for violations of the laws and customs of war, as well as murder."

It is not clear if Lytvynenko was on the ground during the alleged attacks on the 64th Motorized Rifle Brigade in Izyum.

On Friday, the European Union named and blacklisted a Russian military commander describing him as a "butcher" of Bucha, per al-Jazeera. Colonel Azatbek Omurbekov of the 64th Separate Motor Rifle Brigade led Russian troops as they "killed, raped and tortured civilians in Bucha," alleged the EU.

Approximately 1,000 bodies have been recovered from Bucha, including 31 children, according to Ukrainian authorities, the BBC reported.