A top Russian tank touted by Russian President Vladimir Putin as the “world’s best” has suffered at least 100 losses in the war in Ukraine, according to open-source information.

The losses were recorded by Oryx, an open-source intelligence site that relies on visual evidence to confirm and track war losses on both sides. More T-90Ms may have also been lost in combat but not recorded. Business Insider was unable to independently verify the information.

Losses, per the site’s analysis, include destroyed, damaged, and captured vehicles.