Ukraine Foreign Minister: 20,000 foreign volunteers
Ukrainian Foreign Minister Dmytro Kuleba said that more than 20,000 people from 52 countries had volunteered to fight in Ukraine.
Kuleba said that they will serve in a newly created international legion.
"The whole world today is on Ukraine's side not only in words but in deeds," Kuleba said.
Brent oil price rises
Brent oil prices rose to almost $140 (€129) per barrel on Sunday.
This is the highest price since 2008, when the prices hit $147.50 (€135.60) per barrel.
Accounting firms pull out of Russia
Two major accounting companies announced on Sunday that they were leaving Russia.
Accounting firms KPMG and PwC (also known as PricewaterhouseCoopers) both said that they would end their relationship with Russia-based member firms.
KPMG said it was also pulling out of Belarus.
KPMG has more than 4,500 employees in Russia and Belarus, and PwC said it has 3,700 in its Russian member firm.
Ukraine: Russian forces increase shelling of cities
Russian forces increased the shelling of a number of Ukrainian cities late on Sunday, presidential adviser Oleksiy Arestovich said.
Arestovich said that the outskirts of Kyiv had come under increased shelling. Russian forces also stepped up shelling on Kharkiv, the northern city of Chernihiv and the southern city of Mykolaiv, according to Arestovich.
Arestovich said that the situation in the Kyiv suburbs of Bucha, Hostomel and Iprin was "catastrophic," adding that the government was doing all it could to resume evacuations after previous efforts failed.
Zelensky: Sanctions insufficient
Ukrainian President Volodymyr Zelensky said in a Sunday video statement that current sanctions imposed on Russia are not sufficient.
"The audacity of the aggressor is a clear signal to the West that the sanctions imposed on Russia are not sufficient," Zelensky said.
The statement came after Russia announced that its forces would strike Ukraine's military-industrial complex and urged employees at defense industry plants to abandon their workplaces.
"I don't hear even a single world leader react to this," said Zelenskyy, referring to the Russian announcement.
Ukraine's president called for the organizing of a "tribunal" to bring Russia to justice for this action.
UK releases additional Ukraine aid
British Prime Minister Boris Johnson announced on Sunday that the UK was releasing another $100 million (€92 million) in aid for Ukraine.
The $100 million will be provided via the World Bank. The UK had previously contributed $290 million (€265 million) to Ukraine.
US' Blinken praises Moldova
US Secretary of State Antony Blinken praised Moldova on Sunday for taking in refugees from Ukraine.
Blinken made the comments after visiting the Moldovan capital of Chisinau.
He added that Moldova had also made progress including "economic growth" and "fighting corruption" since it declared its independence in 1992.
Ukraine: Several hundred thousand must be evacuated
The Ukrainian Presidential office said that several hundred thousand Ukrainians must be evacuated from their towns immediately.
Ukrainian newspaper Ukrayinska Pravda cited the presidential office as saying that there are several dozen towns in eight regions where the humanitarian situation is catastrophic.
According to Ukrayinska Pravda, the presidential office said that Russia was using humanitarian corridors as a pretext to strengthen its military positions.
Moscow Bolshoi Theatre conductor resigns
Tugan Sokhiev, the chief conductor at Moscow's Bolshoi Theatre and the conductor of an orchestra in the French city of Toulouse, announced on Sunday he would resign from both positions.
The announcement came after the mayor of Toulouse had pressed Sokhiev to clarify his attitude toward the Russian invasion of Ukraine, according to local newspaper La Depeche.
"Today I am forced to make a choice and choose one of my musical family over the other. I am being asked to choose one cultural tradition over the other," Sokhiev said in a Facebook post.
"I have decided to resign from my positions as Music Director of Bolshoi Theatre in Moscow and Orchestre National du Capitole de Toulouse with immediate effect."
Russian NGO: more than 4,400 arrested in anti-war protests
More than 4,400 people were arrested on Sunday in various cities in Russia amid anti-war protests, according to Russian human rights organization OWD-Info.
OWD-Info said that 2,035 people had been arrested in Moscow and 1,150 in St Petersburg.
There were anti-war protests in more than 60 cities across Russia.
Ukraine officials: Kharkiv TV tower damaged
Ukrainian officials said that the TV tower in Kharkiv has been damaged in a Russian attack, meaning that television broadcasts have to be shut down for now.
Ukrainian official Oleh Syniehubov told the UNIAN news agency that specialists are on standby to carry out repairs.
More than a million Ukrainian refugees stream into Poland
Poland's Border Guard said over a million refugees from Ukraine have crossed the Polish border.
"This is a million human tragedies, a million people banished from their homes by the war," the agency wrote on Twitter.
The UN High Commissioner for Refugees, Filippo Grandi, says more than 1.5 million refugees from Ukraine have fled to neighboring countries over the past 10 days.
Most have entered Poland, while others have sought safety in Hungary, Moldova, Slovakia, and Romania.
The number of refugees continued unabated Sunday, even as humanitarian corridors meant to ease the flight of refugees collapsed.
Grandi said the humanitarian corridors were also critical to allowing basic goods to be delivered to those in need and evacuate the most vulnerable.
"But what is needed really is a cease-fire, the end of hostilities, because that's the only way to stop this tragedy,'' Grandi said.
Denmark considers joining EU defense pact and boosts defense spending
Denmark will hold a referendum in June to decide whether to join the European Union's defense pact.
Danish Prime Minister Mette Frederiksen said Russia's invasion of Ukraine drove the decision to hold the vote.
Denmark would also spend 7 billion crowns ($1 billion, €939 million) over the next two years to strengthen the country's defense.
It was "the largest investment in Danish defense in recent times," Frederiksen said.
The country would also increase its defense spending gradually to reach 2% of GDP by 2033.
"Historic times call for historic decisions," the prime minister said.
Danes opted out of the European Union's Common Security and Defence Policy in 1992, but the referendum could change that.
It would enable Denmark to participate in joint EU military operations and cooperate on development and acquisition of military capabilities within the EU framework.
"Putin's pointless and brutal attack on Ukraine has heralded a new era in Europe, a new reality," Frederiksen said.
TikTok cut off live streaming and new content posts in Russia
TikTok is suspending live streaming and new content to its video service in Russia after the Kremlin introduced a new law that could jail anyone intentionally spreading "fake" news.
The video-sharing app said it "provide(s) a source of relief and human connection during a time of war" but was concerned about the safety of its staff and users in Russia.
"We will continue to evaluate the evolving circumstances in Russia to determine when we might fully resume our services with safety as our top priority," the company said.
Israel's Bennett calls Putin and Zelenskyy again
Israeli Prime Minister Naftali Bennett says the chances of stopping fighting in Ukraine were "not great."
He spoke by phone Sunday evening with Russian President Vladimir Putin, a day after his trip to Moscow.
Bennett said Israel would continue trying to mediate between Russia and Ukraine even if success seems unlikely.
"The moment there is even a small opening, and we have the access to all sides and the capability, I see it as a moral duty to make every attempt," he told his cabinet during a televised speech.
The Israeli prime minister's office said he had spoken three times over the weekend with Ukrainian President Volodymyr Zelenskyy.
Bennett also called German Chancellor Olaf Scholz, whom he visited in Berlin on Saturday, and French President Emmanuel Macron.
No further details were made public.
Israel is one of the few countries that has good working relations with both Russia and Ukraine.
American Express latest to suspend Russian operations
American Express joined Visa and Mastercard to suspend its operations in Russia.
"Globally issued American Express cards will no longer work at merchants or ATMs in Russia. Additionally, cards issued locally in Russia by Russian banks will no longer work outside of the country," American Express said in a statement.
The company also said it is terminating all business operations in Belarus.
On Saturday, Visa and Mastercard, two of the world's largest payment networks, said their cards issued by Russian banks would stop functioning overseas.
However, they would continue to operate through a state-owned processing system in Russia until they expire.
Russia's central bank said that some local lenders would look to use China's UnionPay system instead.
IAEA concerned staff at Zaporizhzhia nuclear plant are taking orders from Russian officers
Staff at the biggest atomic power plant in Europe is under the commander of the Russian forces, the International Atomic Energy Agency (IAEA) said on Sunday.
"I'm extremely concerned," IAEA chief Rafael Grossi said in a statement.
Ukraine's nuclear regulator told the IAEA it was hard to get reliable information from the Zaporizhzhia nuclear plant as Russian forces have switched off some mobile networks and the internet.
"In order to be able to operate the plant safely and securely, management and staff must be allowed to carry out their vital duties in stable conditions without undue external interference or pressure," Grossi said.
Grossi said it also seems like workers at Chernobyl have not been able to rest since 23 February.
He stressed the importance of operating staff being able to rest to carry out their essential jobs "safely and securely."
Grossi again offered to fly to Chernobyl to meet with Russian and Ukrainian authorities to secure the nuclear plants in the country.
Guterres calls for a temporary cease-fire
The UN Secretary-General, Antonio Guterres, called for a "pause in the fighting" in Ukraine.
He said it would give civilians a chance to evacuate from battle zones, "and to ensure life-saving humanitarian supplies can move in for those who remain."
On Sunday, a second attempt to establish a humanitarian corridor out of the besieged Ukrainian city of Mariupol failed.
Ukrainian President Volodymyr Zelenskyy warned more civilian lives were at risk as Russian troops prepared to attack Odessa.
According to a Kremlin statement, Russian President Vladimir Putin earlier told Turkish President Recep Tayyip Erdogan that the invasion could be halted only "if Kyiv ceases hostilities."
Macron tells Putin fighting around Ukraine's nuclear plants off-limits
French President Emmanuel Macron urged his Russian counterpart to ensure the safety of Ukraine's nuclear sites.
Macron spoke to Vladimir Putin for nearly two hours on Sunday.
The French president's office said he told Putin nuclear facilities must not be targeted by Russian forces or caught in the fighting.
Earlier in the week, a Russian strike on the Zaporizhzhia nuclear plant caused global alarm.
Putin said "it was not his intention" to attack nuclear sites and agreed on the principle of a "dialogue" between the International Atomic Energy Agency (IAEA), Ukraine and Russia about the future of the plants.
The Russian president blamed Ukrainians for failed attempts to evacuate civilians from the southern cities of Mariupol and Volnovakha.
Macron again urged Putin to find a negotiated settlement to the Ukraine crisis.
Putin told Macron that Russia would achieve its aims through "negotiation or war."
UN confirms over 350 civilian deaths
The United Nation's human rights office reported 364 confirmed cases of fatalities and 759 confirmed cases of injuries among civilians in Ukraine as of Saturday night.
Due to a strict methodology for counting cases, only confirmed cases are reported, but the office added that the real numbers are probably much higher, "especially in government-controlled territory and especially in recent days."
The number reported by Ukrainian authorities are much higher. More than 1.5 million people have fled the country since the invasion began.
