Russian forces are continuing their attempted push through Ukraine from multiple directions, while Ukrainians, led by President Volodymr Zelenskyy, are putting up "stiff resistance," according to U.S. officials.
The attack began Feb. 24 as Russian President Vladimir Putin announced a "special military operation."
Russians moving from Belarus towards Ukraine's capital, Kyiv, don't appear to have advanced closer towards the city since coming within about 20 miles, although smaller advanced groups have been fighting gun battles with Ukrainian forces inside the capital since at least Friday.
Russia has been met by sanctions from the U.S., Canada and countries throughout Europe, targeting Russia's economy and Putin himself.
Here's how the news is developing. All times Eastern.
Feb 27, 2022, 1:41 PM EST
Canada prohibits Russian aircraft to enter its airspace
Canada announced that it will prohibit "Russian-owned, chartered, or operated aircraft" from entering its airspace, effective immediately.
"All of Canada is united in its outrage of President Putin’s aggression against Ukraine," Omar Alghabra, Canada's minister of transport, said in a statement. "The government of Canada condemns Russia’s aggressive actions and we will continue to take action to stand with Ukraine.”
Oil giant BP announced it would exit its 19.75% shareholding stake in Rosneft, the key Russian state oil company, because of Russia’s invasion of Ukraine.
BP’s CEO Helge Lund said in a statement the invasion “represents a fundamental change” and that its involvement with Rosnef “simply cannot continue.”
Helge Lund speaks during a interview at the United Nations COP21 climate summit in Paris, Dec. 4, 2015.
Bloomberg via Getty Images, FILE
"The BP board believes these decisions are in the best long-term interests of all our shareholders," Lund said.
The two BP nominated directors will resign from Rosneft's board immediately and the company will no longer report reserves, production or profit for Rosneft, according to the company.
-ABC News' Patrick Reevell
Feb 27, 2022, 12:52 PM EST
Zelenskyy says he doubts there will be a diplomatic breakthrough with Russia
Ukrainian President Volodymyr Zelenskyy provided an update to the invasion and gave a pessimistic outlook on possible diplomatic solutions with Russia.
In a three-minute televised speech, Zelenskyy said he talked with Belarusian leader Alexandr Lukashenko for the first time in two years.
Lukashenko suggested that Russian and Ukrainian delegations meet at the Belarus-Ukraine border for negotiations-- something Ukraine agreed to earlier Sunday but Zelenskyy said he told Lukashenko he does not believe there will be a breakthrough or tangible outcome in talks with Russian representatives.
Volodymyr Zelenskyy, President of Ukraine, addresses the public in a broadcast on Feb. 27, 2022.
Volodymyr Zelenskyy via YouTube
Zelenskyy said he doesn't want there to be any doubt whatsoever that as president of Ukraine he didn't try to stop this war.
Lukashenko made assurances that troops wouldn't move from Belarus into Ukraine and missiles wouldn't being launched from his territory, according to Zelenskyy.
Zelenskyy said the government will stay and continue to fight for Ukraine's independence, sovereignty and territorial integrity and will not concede any ground.
He added that Ukraine's military members will receive a monthly salary of 100,000 Hryvnya, roughly $3,350, until the war is over.
-ABC News' Christine Theodorou
Feb 27, 2022, 12:37 PM EST
Russian momentum slowed by 'stiff resistance': US official
The momentum of Russian forces in Ukraine appears to have been slowed by fuel and logistics shortages and by "stiff resistance," according to a U.S. senior defense official.
The defense official said Russian troops appear to be having fuel and logistics shortages near Kharkiv in northeast Ukraine and with units advancing from the north to Kyiv, the capital city, but also credited the slow down of the Russian invasion to the resistance.
The official said they believe the advance was slowed in part "by resistance by the Ukrainians who have been quite creative in finding ways to attack columns."
Family members hug as they reunite, after fleeing conflict in Ukraine, at the Medyka border crossing, in Poland, Feb. 27, 2022.
Visar Kryeziu/AP
The official said the Russians have still not taken any cities. The main Russian advance forces designated for Kyiv are roughly 19 miles from the city center, according to the official, who added that there is fighting inside the city center due to Russian reconnaissance units there.
"We're certainly not disputing that there's fighting going on in Kyiv, but it is at a fairly low level," the official said.
The officials said there is "no reason to doubt" reports of Russian reconnaissance units wearing Ukrainian uniforms to try to disguise themselves and what they're doing.
Russia has launched 320 missiles against Ukraine since the invasion began last week, and its troops have adopted alarming "siege tactics" around the northern Ukraine city of Chernihiv.
"They've had trouble around Chernihiv, and it appears that they are adopting a siege mentality, which any student of military tactics and strategy in history will tell you when you adopt siege tactics, it increases the likelihood of collateral damage to civilian infrastructure as well as to civilian life because a siege basically becomes an all-out effort to take a city without regard to civilian infrastructure," the official said. "So that's worrying and that's concerning. And we're seeing the beginnings of that sort of tactical approach by the Russians."
The official said Russia has committed two-thirds of its combat power designated to the Ukraine invasion.
"They have a third of it that has not been committed," the official said. "They have a significant amount of combined arms capabilities still at their at their beck and call."
