The Russian military's airborne forces, known as the VDV, "have been heavily involved in several notable tactical failures since the start of Russia's invasion" of neighboring Ukraine, according to the U.K. Ministry of Defense.

"This includes the attempted advance on Kyiv via Hostomel Airfield in March, the stalled progress on the Izium axis since April, and the recent failed and costly crossings of the Siverskyi Donets River," the ministry said Thursday in an intelligence update.

"Russian doctrine anticipates assigning the VDV to some of the most demanding operations," the ministry added. "The 45,000-strong VDV is mostly comprised of professional contract soldiers. Its members enjoy elite status and attract additional pay. The VDV has been employed on missions better suited to heavier armoured infantry and has sustained heavy casualties during the campaign."

The VDV's "mixed performance likely reflects a strategic mismanagement of this capability and Russia’s failure to secure air superiority," according to the ministry.

"The misemployment of the VDV in Ukraine highlights how Putin’s significant investment in the armed forces over the last 15 years has resulted in an unbalanced overall force," the ministry said. "The failure to anticipate Ukrainian resistance and the subsequent complacency of Russian commanders has led to significant losses across many of Russia’s more elite units."

Drone footage released by Russian media shows the devastation inside the Azovstal steel plant in Mariupol, Ukraine, where Ukrainian forces fended off Russian troops for weeks amid intense fighting before surrendering.

The drone footage released by the Russian news outlet MIC Izvestia showed the collapsed walls of the plant and twisted metal and debris strewn about the entire facility.

The Russian Defense ministry on Friday said the last Ukrainian fighters defending Azovstal had surrendered, giving Russia full control of the port city of Mariupol.

The seizure of Mariupol, gives Russia command of a land route linking the Crimean Peninsula, which Moscow seized in 2014, with mainland Russia and parts of eastern Ukraine held by pro-Russian separatists.

Canada's Defense Minister Anita Anand announced Tuesday that her country is sending Ukraine more than 20,000 artillery rounds of 155mm NATO-standard ammunition, to further support Ukraine’s military response to Russian leadership’s "illegal, and unjustifiable invasion."

The ammunition, Anand said, has been sourced from the United States at a cost around $98 million and that work is underway to deliver it to Ukraine as quickly as possible.

The ammunition can be fired from M777 howitzer cannons that Canada and its allies have donated to Ukrainian forces.

“Canada stands with Ukraine and its people as they resist Putin’s illegal and unjustifiable assault," Anand said. "Today’s announcement is another example of our unwavering commitment to provide Ukraine with the comprehensive military aid it needs to defend its sovereignty, territorial integrity, and independence."

The language being used by Ukrainian officials, including President Volodymyr Zelenskyy, in relation to the war has changed significantly in the past couple of days and, to some extent, reflects the pressure Ukrainian forces are currently under as Russian forces make progress in the eastern Donbas region.

Marking the third month of the war, Zelenskyy’s said in a speech Monday night that the toughest battles in recent days have been in the Donbas, Bakhmut, Popasna and Severodonetsk areas of eastern Ukraine, where Russia has concentrated most of its efforts and is "trying to destroy everything living there." He warned that the coming weeks of the war "will be difficult."

"Yet we have no alternative but to fight -- fight and win," Zelenskyy said.

Zelenksyy's admission of 50 to 100 Ukrainian soldiers dying every day as of this past weekend and his revelation that more than 70 troops were killed in a single attack on a military base near Kyiv a week ago are a departure from the broad Ukrainian messaging up until now, which has been to stay silent on casualty numbers.

The shift in language on the Ukrainian side over the number of troops lost comes amid multiple reports in recent days suggesting Russia is making small but incremental gains in the Donbas. The latest assessment from the British Defense Ministry is that Russia has achieved "some localized successes."

Zelenskyy and his top officials have ramped up calls for more weapons from Western nations, specifically the United States. As ABC News has reported, multilaunch rocket systems are at the top of the Ukrainians' wish list. They also want Western-made fighter jets, such as F-16. However, training time and maintenance issues make the supply of fighter jets more complicated.

Ukrainian officials have publicly addressed Western concerns that Ukraine might use medium-range missile systems to hit targets in Russia, saying that Ukraine will only use them to hit targets within Ukraine's pre-2014 borders. There has been no suggestion that Ukraine would strike targets in Crimea, which presumably would be seen by Western officials as carrying a similar risk of escalation with Russia.

The United States and some of its allies are concerned that Russia would use strikes in Russian territory with Western-supplied weapons as a pretext for direct confrontation with the West.

-ABC News' Ian Pannell, Dragana Jovanovic and Tom Soufi Burridge