Russia-Ukraine updates: US sanctions Russian military shipbuilder, diamond miner

President Joe Biden held a video call with Chinese President Xi Jinping for one hour and 50 minutes on Friday, marking the first time the two leaders spoke since November.

The White House readout of the call doesn't say whether the conversation was constructive or not, but the White House said Biden made clear the "implications and consequences" if China aligns with Russia and provides them "material support."

China's readout of the call said China supports negotiations but passes the buck to the U.S. and NATO to "conduct dialogue with Russia to solve the crux of the Ukraine crisis and resolve the security concerns of both Russia and Ukraine."

The call was “direct,” “substantive” and “detailed,” according to a senior administration official.

The official said Biden “really wasn't making specific requests of China” on the call and instead was “laying out his assessment of the situation, what he thinks makes sense, and the implications of certain actions.”

The official said that the call was “less about coming away with a particular view out of conversation today and more about making sure, again, that they were able to really have that direct candidate and detailed and very substantive conversation at the leader level.”

-ABC News' Mary Bruce, Karson Yiu and Justin Gomez

French President Emmanuel Macron spoke with Russian President Vladimir Putin on the phone Friday, sharing "his extreme concern" about Russian attacks on the besieged city of Mariupol, the Élysée said.

Macron "asked him for concrete and verifiable measures to lift the siege of Mariupol, humanitarian access and an immediate ceasefire," the Élysée said.

Russian attacks have prevented many civilians from escaping Mariupol and is keeping humanitarian supplies from being brought in. The Mariupol City Council reported Sunday that 2,187 residents had been killed since the start of the invasion. Ukrainian Deputy Prime Minister Iryna Vereschuk said last week that the city was "beyond a humanitarian disaster," with most roads destroyed, little communication with the outside and no power, gas or heat.

The Russians remain largely stalled on day 23 of the invasion of Ukraine and haven't moved further toward Kyiv, according to a senior U.S. defense official.

Reports of missile strikes near Lviv's airport seem accurate, the official said, adding that there was no additional information at this time.

Russians stalled on the battlefield by Ukrainian resistance are resorting to artillery and long-range missiles to strike at Ukraine’s cities. Russians have now launched 1,080 missiles at Ukrainian targets -- an increase of 80 missiles in one day, the official said.

-ABC News' Luis Martinez

During the meeting Russia convened to air its allegations of dangerous biolabs in Ukraine, U.S. Ambassador to the U.N. Linda Thomas-Greenfield told her fellow Security Council members that they may be witnessing one of Moscow’s battle tactics unfolding before their eyes.

“I will reiterate the United States’ deep and serious concern that Russia's calling for this meeting is -- is --a potential false flag effort in action. Russia has repeatedly -- repeatedly--accused other countries of the very violations it plans to perpetrate,” she stated. “We continue to believe it is possible that Russia may be planning to use chemical or biological agents against the Ukrainian people.”

“Last week we heard from the Russian representative a tirade of bizarre conspiracy theories. This week, we're hearing a whole lot more where that came from -- things that sound like they were forwarded to him on a chain email from some dark corner of the internet," she said.

"President Joe Biden has a word for this kind of talk: malarkey,” Thomas-Greenfield continued, again flatly denying claims that Ukraine has a biological weapons program. Thomas-Greenfield reminded the room that it is Russia that maintains such a program in violation of international law and has a documented history of using nerve agents against enemies of the Kremlin as well as supporting the use of chemical warfare in Syria.

“We aren't going to dignify Russia's disinformation or conspiracy theories. But we will continue to sound the alarm and tell the world where we think Russia is heading,” she added. “And we will remind the world that Russia has repeatedly -- repeatedly -- lied to this council over recent weeks."

-ABC News' Shannon Crawford, Zoha Zamar