The Kremlin has expressed alarm over President Joe Biden's comments about the leadership of his Russian counterpart, Vladimir Putin.

"For God's sake, this man cannot remain in power," Biden said of Putin on Saturday during a speech in Warsaw.  The White House sought to clarify Biden's remark and the president said Sunday he had not been calling for regime change.

Asked Monday about Biden's comment, Kremlin spokesman Dmitry Peskov said: "This is a statement that is certainly alarming."

"We will continue to closely monitor the statements of the U.S. president," Peskov said. "We are carefully recording them — and we will continue to do so."

"As for the essence of these statements, I already commented on Saturday," he said, referring to his immediate response in the wake of the speech that the future of Russia's leadership was "not for Biden to decide."

Russian military forces near Kyiv are "still trying to break through" the Ukrainian defense in order to take control of key roads and settlements, Ukraine’s ministry of defense said Monday in a statement on operational updates.

“The grouping of Ukrainian forces and means of defense of the city of Kyiv is deterring the Russian enemy,” the ministry said.

The Ukrainian defense forces continued operations in eastern, southeastern and northeastern directions across the country, it said.

In the south, defense forces were mainly focused on the cities of Kryvyi Rih, Zaporizhzhia and Mykolayiv in an effort to maintain parts of the coast and to protect critical infrastructure, it added.

Dutch beer company Heineken has announced it will be exiting Russia in response to Moscow's invasion of Ukraine.

The decision comes following an exodus of Western brands from Russia in response to the Ukraine war. 

Heineken had previously said it would only stop new investments and exports to Russia. 

In a statement, Heineken said the company had "concluded that Heineken's ownership of the business in Russia is no longer sustainable nor viable in the current environment."

It said the company would not benefit from any transfer of ownership and expected an impairment charge and other non-cash exceptional charges of around 400 million euros ($438 million). 

Heineken said it would guarantee the salary of Russian employees until the end of the year.

A Russian tank destroyed following a battle in the town of Trostyanets, Sumy region, in an image released by the armed forces of Ukraine on Sunday.

Russian gas deliveries to Europe on three main pipeline routes were stable on Monday morning, despite threats from Moscow that they would retaliate for Western sanctions imposed after the invasion of Ukraine. 

Russia's Gazprom said on Sunday it had continued to supply gas to Europe via Ukraine in line with requests from European customers. Gazprom, the world's biggest natural gas company, supplies 40 percent of Europe's gas.

Facing its gravest economic crisis since the years following the break-up of the Soviet Union, Russia on Friday warned that billing in roubles for billions of dollars of natural gas exports to Europe could be just days away, its toughest response yet to crippling sanctions imposed by the West.

Russian President Vladimir Putin said the West had declared economic war by freezing Russian assets, and so Russia saw no point in receiving dollars or euros for Russian exports anymore.

Britain’s defense ministry said Monday morning that Russian forces had made no significant progress over the last 24 hours amid continuing supply issues and aggressive resistance from Ukrainian fighters. 

A continued "lack of momentum and morale" among Russian military members has compounded the ongoing logistical shortages, the ministry said in an intelligence briefing on the situation in Ukraine posted on Twitter.

Meanwhile, it said heavy fighting continues around Mariupol as Russian forces try to capture the port on the Sea of Azov, which connects to the Black Sea.

In a previous post, the ministry had said Russia was maintaining a blockade of Ukraine’s Black Sea coast, "effectively isolating Ukraine from international maritime trade." It said Russian naval forces were also "continuing to conduct sporadic missile strikes against targets throughout Ukraine." 

Dmitry Bodyu, an American pastor allegedly abducted in Ukraine earlier this month, has been freed, his family said on Monday.

The family was "relieved" after Bodyu's release, his daughter Esther Bodyu-Ogana told NBC News.

Bodyu, 50, a well-known pastor in Ukraine who had invited people to seek shelter in his church, was taken by about eight to 10 Russian soldiers in the Russian-controlled city of Melitopol on March 19, his wife Helen had told NBC News last week. 

"They just came in in the morning," wife Helen Bodyu said. "They took our phones, gadgets, computers, documents — and took him somewhere. I don’t know where," she said at the time.

A Ukranian serviceman stands on top of a Russian tank captured after fighting in the village of Lukyanivka outside Kyiv on Sunday.

Ukraine announced that it would not seek to open so-called humanitarian corridors on Monday, citing the possibility of Russian attacks on civilians trying to flee frontline areas. 

"Our intelligence reported possible provocations by the occupiers on the routes of humanitarian corridors. Therefore, for reasons of public safety, we do not open humanitarian corridors today," Ukrainian Deputy Prime Minister Iryna Vereshchuk said via Telegram. 

Humanitarian corridors intended to help civilians escape the fighting have come under fire since the war began. Following several attacks on humanitarian corridors, Secretary General at Amnesty International Agnès Callamard has condemned the "deliberate targeting of civilians" during the conflict and called for all "unlawful attacks to cease."

The Oscars held a moment of silence acknowledging the war in Ukraine.

Up until the moment, which featured slides with a message of support, the only other official acknowledgment of the conflict came from actor Mila Kunis, who was born in Ukraine.

Here's the text of the statement, which ran during the brief moment of silence:

"We'd like to have a moment of silence to show our support for the people of Ukraine currently facing invasion, conflict and prejudice within their own borders. While film is an important avenue for us to express our humanity in times of conflict, the reality is millions of families in Ukraine need food, medical care, clean water, and emergency services. Resources are scarce, and we — collectively as a global community — can do more. We ask you to support Ukraine in any way you are able. #StandwithUkraine"