One person was injured after a Russian missile hit a medical clinic in the town of Krasnotorka, Ukraine, in the eastern Donetsk oblast, Ukrainian regional military chief Pavlo Kyrylenko said in a Facebook post.

-ABC News' Max Uzol

Ukrainian President Volodymyr Zelenskyy said during a press conference in Kyiv on Friday he would like to meet with Chinese President Xi Jinping.

Zelenskyy said he’d like to talk about the Chinese government's offer to discuss a peace agreement in detail, "because it’s about our country." However, the president noted that the Chinese government hasn't directly talked to Ukrainian's government.

"The first point of their plan is 'recognition of national sovereignty and territorial integrity,' but they didn’t even mention the country. I hope they meant us, Ukraine,” Zelenskyy said. "If it’s us, everybody understands that territorial integrity can be achieved by withdrawal of Russian troops from all occupied territories."

Zelenskyy said it is "priority number one" for him to prevent China from providing Russia with weapons for the ongoing conflict.

"I believe China is going to side with the idea of fair peace, peace and fairness which is our side," he added.

-ABC News' Ellie Kaufman

Western officials have provided a more detailed look at the scope of losses for Russia since its invasion began a year ago.

The range of Russian casualties is believed to be between 180,000 and 200,000, which includes killed and wounded figures, a U.S. official told ABC News. The official cautioned that this number is all inexact but also includes Wagner forces.

The ratio of wounded to killed soldiers is three to one among estimated Russian casualties of 175,000 to 200,000, Western officials told ABC News on Feb. 21.

On the Ukrainian side, there are "at least 100,000" Ukrainian casualties in the war so far with a ratio of 20 wounded soldiers to every dead soldier, Western officials said on Feb. 21.

-ABC News' Luis Martinez, Elle Kaufman and Zoe Magee

The White House is now warning that Iran’s support for Russia’s war in Ukraine is "expanding" with the country sending additional military aid in November with the expectation that more will be obtained.

"In November, Iran shipped artillery and tank rounds to Russia for use in Ukraine," White House spokesperson John Kirby said Friday. "Russia is planning to cooperate with Iran to obtain more military equipment."

In return, Kirby said that Russia “has been offering Iran unprecedented defense cooperation, including on missiles, electronics and air defense.”

“We believe that Russia might provide Iran with fighter jets. Iran is also seeking to purchase additional military equipment from Russia including attack helicopters, radars and combat trainer aircraft. In total, Iran is seeking billions of dollars of military equipment from Russia," Kirby said.

-ABC News' Justin Gomez

One year ago, with Ukraine's borders surrounded by what seemed to be a superior military force, many U.S. officials and analysts predicted a swift Russian blitz to Kyiv.

But after Russian President Vladimir Putin sent his more than 150,000 arrayed troops across the border, it soon became clear that a dual reassessment was in order: The Russian invaders were less potent than advertised, and the Ukrainians were unexpectedly stubborn and wily in the defense.

Some of the Russian troops weren’t even aware they were on a combat mission until Ukrainian bullets came cracking past them, according to U.S. officials. Meanwhile, Ukrainian forces stalled a massive Russian supply convoy through direct attacks and by destroying a key bridge. Only one week into the invasion, Putin's men were plagued with food and fuel shortages, morale running similarly low.

Kyiv stood.

"Putin assumed that Ukraine was an easy target, Putin assumed that Kyiv would easily fall, and Putin assumed that the world would stand by," U.S. Secretary of Defense Lloyd Austin said during a speech in Brussels last week. "But the Kremlin was wrong on every count."

Ukrainian forces were armed with more than grit.

They also had years of U.S. and NATO military training, plus American-made weapons, like anti-armor Javelins and anti-aircraft Stinger missiles. These made Russian vehicles vulnerable to ambush, and left Russian helicopter and jet pilots wary of flying over Ukrainian positions. Indeed, many airmen did not return from their sorties.

Despite astonishing losses of soldiers and vehicles, Putin has shown no inclination to end the conflict anytime soon. And despite its tenacity, Ukraine has also taken significant casualties, and is not able to produce enough of its own weapons and ammunition to keep up the fight.

Ukraine, after thwarting the advance on its capital, and later routing Russian forces from Kharkiv, now largely faces a battle of supply.

"When this war began, Russia had a larger population, a much bigger defense budget, a bigger military, bigger industrial base. So, this became an industrial war and a war of industrial bases," said Seth Jones, director of the International Security Program at the Center for Strategic and International Studies. "This is why Western industrial support has been so critical."

A key question now is, despite massive military aid packages and a promise to send even more, could the U.S. strategy ultimately result, not in a Ukrainian victory, but a stalemate in a years-long war of attrition?

-ABC News' Matt Seyler