While Ukraine attempts to evacuate civilians from Mariupol, including those still trapped in a steel plant's steel plant, Russian forces claim victory in the city.However, Russia's recent defeats around Kyiv reveal unresolved flaws, including its armored vehicles.
Ukraine claims that Russia has lost nearly 3,000 armored vehicles to date -- but only half of them in combat.
"It is not good military leadership if there are so many men and so many equipment," a Ukrainian military expert, Yuri Zbanatski, told CBS News' Chris Livesay.
Oryx, a military intelligence and military blog that counts Russia's military losses to Ukraine based on photographs taken in the war zone, reports Russia has lost more then 460 tanks.
Zbanatski stated that the tanks were either abandoned or ran out fuel. It's finders keepers for farmers. Their personnel are not well trained. Their commanding officers cannot plan their offensive operations correctly.
Russia's power in eastern Donbas is being tested. The city environment surrounding Kyiv, which provided protection for Ukraine's fighters, has been replaced by open terrain and long-range artillery. This includes dozens of American howitzers.