Thread by @Reuters

Ukrainian forces are putting up 'very determined resistance' to Russia's invasion, a U.S. defense official said, as President Volodymyr Zelenskiy struck a defiant tone on the streets of the capital Kyiv reut.rs/3BX3vyN

Refugees fleeing Russia's invasion of Ukraine poured across its western borders on the third day of fighting, with more than 100,000 reaching Poland so far, many making the final stretch of their journeys to safety on foot reut.rs/33YfnEi

Ukrainian President Volodymyr Zelenskiy welcomed moves to disconnect Russia from 'global financial civilization' in a video message after a French presidential official said EU members were close to agreeing to exclude Russia from the SWIFT payment system reut.rs/3M31Hcd

The official website of the Kremlin, the office of Russian President Vladimir Putin, kremlin.ru, was down, following reports of denial of service (DDoS) attacks on various other Russian government and state media websites reut.rs/3BTX6nY

Germany will supply Ukraine with defensive anti-tank weapons, surface-to-air missiles and ammunition, the government said, in a shift of policy as Russia's forces continued to pound Kyiv and other cities on day three of its campaign reut.rs/3HrGOno

Images via @ReutersPictures of the mass exodus of refugees from Ukraine as residents flee Russia's invasion reut.rs/36L3T8a

.@ReutersGraphics illustrates the third day of Russia's invasion of Ukraine reut.rs/3smRoYM

Clutching a mobile phone number of a woman she had never met, Nataliya Ableyeva crossed the border from Ukraine into Hungary, entrusted with a precious cargo — a stranger's children reut.rs/3sno7gl

Satellite imagery taken on Saturday showed Russian ground forces assembled in Nova Kakhovka, Ukraine, at and near the Kakhovka hydroelectric power plant on the Dnieper River, a private U.S. company said reut.rs/35z7YeP

YouTube barred Russian state-owned media outlet RT and other Russian channels from receiving money for advertisements that run with their videos, similar to a move by Facebook, after the invasion of Ukraine reut.rs/3hjdJQA

Pope Francis called Ukrainian President Volodymyr Zelenskiy and expressed his 'most profound pain' for the country's suffering, the Ukrainian Embassy to the Vatican said reut.rs/3Hs4tUV

Ukraine will create an 'IT army' to fight against Russia's digital intrusions, Vice Prime Minister Mykhailo Fedorov said reut.rs/3K0LeU0

European Commission President Ursula von der Leyen said the EU, along with the U.S. and Western partners, plans to impose further sanctions on Russia for invading Ukraine, including cutting off a number of Russian banks from the SWIFT payments system reut.rs/3IGLRCd

The United States, Britain, Europe and Canada moved to block Russia's access to the SWIFT international payment system as part of another round of sanctions against Moscow as it continues its assault against Ukraine reut.rs/3K3r1gz

Here's what you need to know about SWIFT, the world's main international payments network, from which the EU, the U.S. and other Western partners announced they are cutting off a number of Russian banks, in further sanctions on Russia for invading Ukraine reut.rs/3HjNBjf

Germany and its Western allies agreed to cut Russia out of the SWIFT global payment system, a spokesperson for the German government, in a third sanctions package aimed at halting Russia's invasion of Ukraine reut.rs/3Hp7SUv

Here is a rundown of how sanctions which have already been announced impact Russia's banks and investors as Western allies deploy what the French finance minister had earlier called a 'financial nuclear weapon' reut.rs/3hkmHgi

The United Nations Security Council is due to vote on Sunday to call for a rare emergency special session of the 193-member U.N. General Assembly on Russia's invasion of Ukraine, which would be held on Monday, diplomats said reut.rs/35AiMtr

'Tired, but my sister and I are safe!': Ukrainian tennis star Dayana Yastremska has fled her native country amid a Russian invasion and is now safe in France, the 21-year-old said in a social media post reut.rs/3IDqYaE

SpaceX billionaire Elon Musk said that the company's Starlink satellite broadband service is available in Ukraine and SpaceX is sending more terminals to the country, whose internet has been disrupted due to the Russian invasion reut.rs/3tbMg94

Take a look at how Western sanctions are targeting Russia reut.rs/3JZ9DJD

Investors were preparing for more wild gyrations in asset prices after Western nations announced a harsh set of sanctions to punish Russia for its invasion of Ukraine, including blocking some banks from the SWIFT international payments system reut.rs/3ItLhaz