At least 137 people were killed in the first day of Russia’s assault, Zelenskyy said.
“Peaceful Ukrainian cities are under strikes,” Kulebawrote on Twitter.
“This is a war of aggression.”
The invasion began minutes after Putin declared the start of military operations after months of mounting tensions.
During that period, Putin delivered angry speeches as Russia built up its forces along the border.
Leaders in Washington and Europe sought a resolution through diplomacy, an effort that showed little progress.
Since then, it has been establishing closer ties with Western European nations and the US.
By this week, more than 150,000 Russian troops were said to be surrounding Ukraine.
As the attacks continued throughout the day, many Ukrainian residents made preparations to flee their homeland.
Countries in central Europe including Poland, Hungary and Slovakia prepared to receive an influx of refugees.
“This is a declaration of war against the whole of Europe,” Zelenskyy said on Twitter.
Putin said the goal of the military operation is to demilitarize Ukraine but not occupy it.
“President Putin has reintroduced war to the European continent,” they said.
“He has put himself on the wrong side of history.”
On Thursday, he called a meeting of the US National Security Council.
“Russia alone is responsible for the death and destruction this attack will bring.”
UN Secretary-General Antonio Guterres issued a plea to the Russian president, speaking both to journalists and on Twitter.
“In the name of humanity bring your troops back to Russia,” he said.
He added, “this is a deliberate, cold-blooded and long-planned invasion.”
There are currently 100 jets defending NATO airspace and 120 allied ships at sea.
Building up to invasion
Russia invaded Ukraineback in 2014 before annexing Crimea.
Approximately14,000 people have reportedly been killedin ongoing conflicts in eastern Ukraine.
Putin has also long bristled at NATO’s expansion into eastern Europe.
The admission of either country would increase the military alliance’s presence along Russia’s border.
“For months, Russia has been holding a gun to Ukraine’s head.
“The world is calling for peace, but Russia is not listening.”
When you attack us, you will see our faces, not our backs.”
Germany alsohalted approval of the Nord Stream 2, a key natural gas pipeline running from Russia to Germany.
These include freezing Russian assets within the EU and preventing Russian banks from accessing the European market.
World leaders were divided on whether to cut Russia off from the SWIFT global interbank payments system.
The UK extended sanctions to Belarus for its role in assisting the Russian invasion.
“Putin’s aggression against Ukraine will end up costing Russia dearly economically and strategically,” Biden said.
On Friday, the EU and the US agreed topersonally sanction Putinand Russian Foreign Minister Sergei Lavrov.
The conflict has already had global economic consequences, withthe price of oil fluctuating around $100 a barrel.
